Prof. Dr. Cornelia Erfurt-Berge
Leiterin Medizinisches Wundcentrum Dermatologie ICW/DDG

Prof. Dr. Cornelia Erfurt-Berge
Leiterin Medizinisches Wundcentrum Dermatologie ICW/DDG
Our working group addresses various research questions relating to patients with chronic wounds. We are trying to find solutions through cooperation with medical informatics specialists to give patients with long-term wounds early access to adequate diagnostics and care. Together with other wound centres, we are working on establishing a national wound registry. In clinical care, we investigate innovative pharmaceutical and technical treatment options for various types of wounds.
Research projects
- Development and evaluation of innovative digital methods and AI-supported systems for the sustainable improvement of the diagnosis and treatment of chronic wounds
- Medical education for wound management – new didactic concepts for health care professionals
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DE-EUC-ERASMUS+ KA220_DigiCare_157928: DigiCare - Innovation for a Holistic Approach to Wound Care
(Third Party Funds Single)
Project leader:
Term: 1. January 2024 - 30. September 2026
Acronym: DE-EUC-ERASMUS+ KA220_DigiCare_157928
Funding source: Erasmus+
URL: https://digicareproject.eu/de/ -
A100: Soluble CD83-induced pro-resolving macrophages strongly improve and accelerate wound healing processes
(FAU Funds)
Project leader:
Term: 1. July 2023 - 31. December 2026New medications for the treatment of chronic wounds are urgently needed. Our preliminary data show that sCD83 accelerated wound healing processes in a systemic as well as a topical treatment. Cellular analyses revealed the increase of pro-resolving macrophages, known to improve wound healing processes. These striking regenerative capacities make scD83 a promising candidate to treat chronic- and hard-to-heal wounds. Within the current project we aim to elucidate the underlying mechanisms.
2026
- Dissemond, J., Kottner, J., Placke, J.M., & Erfurt-Berge, C. (2026). Erosive pustular dermatosis of the lower legs (EPDL): A rarely diagnosed neutrophilic dermatosis of the elderly. Journal der Deutschen Dermatologischen Gesellschaft. https://doi.org/10.1111/ddg.70071x
- Erfurt-Berge, C., Renner, R., Peckruhn, M., Tittelbach, J., Terhorst-Molawi, D., Kauer, F., & Dissemond, J. (2026). S1-Guideline for diagnosis and therapy of necrobiosis lipoidica. Journal der Deutschen Dermatologischen Gesellschaft, 24(3), 429-436. https://doi.org/10.1111/ddg.15943
- Hillebrecht, A.L., Barbe, A.G., Krämer, S., Auerbacher, M., Semper-Hogg, W., Spies, B.C.,... Bitter, K. (2026). Competences for Providing Oral Health Care to Care-Dependent Older Adults—Defining Learning Objectives for the German Undergraduate Dental Curriculum Through a Delphi Study. European Journal of Dental Education. https://doi.org/10.1111/eje.70094
- Höner, M., Kainz, A., & Erfurt-Berge, C. (2026). Kraniale Osteomyelitis bei einer Patientin mit KID-Syndrom: Notwendigkeit gründlicher Untersuchungen bei chronischen Wunden. Journal der Deutschen Dermatologischen Gesellschaft, 24(5), 663-665. https://doi.org/10.1111/ddg.15972_g
- Moelleken, M., Ortega-Loayza, A.G., Busch, D., Erfurt-Berge, C., Shinohara, M.M., Do, A.,... Dissemond, J. (2026). Validation of PARACELSUS score performance for the diagnosis of pyoderma gangrenosum: An international multicenter study with 1403 cases. Journal of the American Academy of Dermatology. https://doi.org/10.1016/j.jaad.2026.02.101
- Solochin, C., Busch, D., & Erfurt-Berge, C. (2026). Factitious disorders – challenge for diagnostics and therapy Artifizielle Störungen – Herausforderung für Diagnostik und Therapie. Chirurgische Praxis, 2026.
2025
- Busch, D., Berking, C., Schliep, S., & Erfurt-Berge, C. (2025). Multiple Plattenepithelkarzinome auf einer linearen Porokeratose. Die Dermatologie. https://doi.org/10.1007/s00105-025-05565-2
- Busch, D., Methner, N., Azodanlou, D., Moelleken, M., Dissemond, J., Huebner, U.H.,... Erfurt-Berge, C. (2025). Chronic Wounds and Employment: Assessing Occupation-Related Burden of Patients With Chronic Wounds—Results of a Pilot Study. International Wound Journal, 22(4). https://doi.org/10.1111/iwj.70372
- Busch, D.A., Richter, M.L., Hüsers, J., Przysucha, M., Kücking, F., Mang, J.M.,... Hübner, U.H. (2025). Machine learning model to classify chronic leg wounds and identify pyoderma gangrenosum. BMJ Health & Care Informatics, 32(1). https://doi.org/10.1136/bmjhci-2024-101418
- Dissemond, J., Erfurt-Berge, C., Gerber, V., Motzkus, M., Teubner, K., & Rembe, J.D. (2025). Was sind Wundbeläge? Ein Positionspapier der Initiative Chronische Wunden (ICW) e. V. Die Dermatologie. https://doi.org/10.1007/s00105-025-05571-4
- Hollard, C., Renner, R., & Erfurt-Berge, C. (2025). Einfluss der Ernährung auf die Wundheilung. Aktuelle Dermatologie, 51(8-9), 307-311. https://doi.org/10.1055/a-2657-5345
- Höner, M., Kainz, A., & Erfurt-Berge, C. (2025). Cranial osteomyelitis in a patient with KID syndrome: Importance of thorough investigation in chronic wounds. Journal der Deutschen Dermatologischen Gesellschaft. https://doi.org/10.1111/ddg.15972
- Mahler, L., Conrad, P.V., Busch, D., & Erfurt-Berge, C. (2025). Experts Teaching Wound Management—A Survey of Current Practices in Germany. International Wound Journal, 22(6). https://doi.org/10.1111/iwj.70694
- Reiter, M., Busch, D., & Erfurt-Berge, C. (2025). Educational Interventions for Medical Students in Chronic Wound Care—A Scoping Review. International Wound Journal, 22(9). https://doi.org/10.1111/iwj.70760
- Roes, C., Erfurt-Berge, C., Praeder, M., Eberlein, T., & Abel, M. (2025). Clinicians' experiences of using a sterile non-woven surgical dressing on 394 patients. British Journal of Nursing, 34(4), S24-S31. https://doi.org/10.12968/bjon.2024.0186
2024
- Dietmaier, L., Summa, S., Ronicke, M., & Erfurt-Berge, C. (2024). Peristomal skin lesions – identifying patients at risk. Zeitschrift für Gastroenterologie, 62(11), 1924-1930. https://doi.org/10.1055/a-2360-5099
- Dissemond, J., Bültemann, A., Gerber, V., Motzkus, M., Rembe, J.D., & Erfurt-Berge, C. (2024). Hautveränderungen um Wunden: Ein Positionspapier der Fachgesellschaft Initiative Chronische Wunden (ICW) e.V. Deutsche Medizinische Wochenschrift, 149(18), 1105-1111. https://doi.org/10.1055/a-2359-6728
- Dührkoop, E., Malihi, L., Erfurt-Berge, C., Heidemann, G., Przysucha, M., Busch, D., & Hübner, U.H. (2024). Automatic Classification of Wound Images Showing Healing Complications: Towards an Optimised Approach for Detecting Maceration. In Rainer Rohrig, Niels Grabe, Ursula Hertha Hubner, Klaus Jung, Ulrich Sax, Carsten Oliver Schmidt, Martin Sedlmayr, Antonia Zapf (Eds.), German Medical Data Sciences 2024. Health – Thinking, Researching and Acting Together. Proceedings of the 69th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2024 in Dresden, Germany (pp. 347-355). Dresden, DE: Amsterdam: IOS Press BV.
- Erfurt-Berge, C. (2024). Wundversorgung – ein Lehrthema mit Potenzial. Aktuelle Dermatologie, 50(8-9), 379-383. https://doi.org/10.1055/a-2333-8885
- Kücking, F., Hübner, U., Przysucha, M., Hannemann, N., Kutza, J.O., Moelleken, M.,... Busch, D. (2024). Automation Bias in AI-Decision Support: Results from an Empirical Study. In Rainer Rohrig, Niels Grabe, Ursula Hertha Hubner, Klaus Jung, Ulrich Sax, Carsten Oliver Schmidt, Martin Sedlmayr, Antonia Zapf (Eds.), Studies in Health Technology and Informatics (pp. 298-304). Dresden, DEU: IOS Press BV.
- Ronicke, M., Berking, C., & Erfurt-Berge, C. (2024). Occlusive cutaneous vasculopathies as cause of chronic ulcers. Journal der Deutschen Dermatologischen Gesellschaft. https://doi.org/10.1111/ddg.15276
- Ronicke, M., Berking, C., & Erfurt-Berge, C. (2024). Okkludierende kutane Vaskulopathien als Ursachen chronischer Unterschenkelulzerationen. Journal der Deutschen Dermatologischen Gesellschaft, 22(4), 553-568. https://doi.org/10.1111/ddg.15276_g
- Ronicke, M., & Erfurt-Berge, C. (2024). Medikamentöse Therapien des Ulcus cruris. Aktuelle Dermatologie. https://doi.org/10.1055/a-2317-9979
- Ronicke, M., Sollfrank, L., Vitus, M.V., Walter, L.J., Krieter, M., Moelleken, M.,... Erfurt-Berge, C. (2024). Intravenous Immunoglobulin Therapy for Pyoderma Gangrenosum: A Multicenter Retrospective Analysis in 81 Patients. American Journal of Clinical Dermatology. https://doi.org/10.1007/s40257-024-00904-w
- Valesky, E.M., Hach-Wunderle, V., Protz, K., Zeiner, K.N., Erfurt-Berge, C., Goedecke, F.,... Dissemond, J. (2024). Diagnosis and treatment of venous leg ulcers: S2k Guideline of the German Society of Phlebology and Lymphology (DGPL) e.V. Journal der Deutschen Dermatologischen Gesellschaft, 22(7), 1039-1051. https://doi.org/10.1111/ddg.15415
- Valesky, E.M., Hach-Wunderle, V., Protz, K., Zeiner, K.N., Erfurt-Berge, C., Goedecke, F.,... Dissemond, J. (2024). Diagnostik und Therapie des Ulcus cruris venosum: S2k-Leitlinie der Deutschen Gesellschaft für Phlebologie und Lymphologie (DGPL) e.V. Journal der Deutschen Dermatologischen Gesellschaft, 22(7), 1039-1053. https://doi.org/10.1111/ddg.15415_g
- Yousuf, S., Busch, D., Renner, R., Schliep, S., & Erfurt-Berge, C. (2024). Clinical characteristics and treatment modalities in uremic and non uremic calciphylaxis - a dermatological single-center experience. Renal Failure, 46(1). https://doi.org/10.1080/0886022X.2023.2297566
2023
- Arnet, L., & Erfurt-Berge, C. (2023). Effect of abrocitinib in a patient with extensive necrobiosis lipoidica. Journal of the European Academy of Dermatology and Venereology. https://doi.org/10.1111/jdv.19189
- Erfurt-Berge, C., & Arnet, L. (2023). Therapeutische Optionen der Necrobiosis lipoidica. Internistische Praxis, 67(1), 90-100.
- Erfurt-Berge, C., & Arnet, L. (2023). Therapeutische Optionen der Necrobiosis lipoidica. Tägliche Praxis, 68(2), 261-271.
- Erfurt-Berge, C., Bültemann, A., Gerber, V., Motzkus, M., Rembe, J.D., & Dissemond, J. (2023). Stellenwert der Biopsie in der Diagnostik chronischer Wunden – ein Positionspapier der Initiative Chronische Wunden (ICW) e. V. Die Dermatologie. https://doi.org/10.1007/s00105-023-05259-7
- Malihi, L., Hübner, U., Richter, M.L., Moelleken, M., Przysucha, M., Busch, D.,... Hüsers, J. (2023). Can Synthetic Images Improve CNN Performance in Wound Image Classification? In Maria Hägglund, Madeleine Blusi, Stefano Bonacina, Lina Nilsson, Inge Cort Madsen, Sylvia Pelayo, Anne Moen, Arriel Benis, Lars Lindsköld, Parisis Gallos (Eds.), Caring is Sharing – Exploiting the Value in Data for Health and Innovation. (pp. 927-931). IOS Press.
- Moelleken, M., Erfurt-Berge, C., Ronicke, M., Busch, D., Hübner, U.H., Hüsers, J.,... Dissemond, J. (2023). Predilection sites of pyoderma gangrenosum: Retrospective study of 170 clearly diagnosed patients. International Wound Journal. https://doi.org/10.1111/iwj.14323
- Przysucha, M., Hüsers, J., Liberman, D., Kersten, O., Schlüter, A., Fraas, S.,... Hübner, U. (2023). Design and Implementation of an ETL-Process to Transfer Wound-Related Data into a Standardized Common Data Model. In Rainer Röhrig, Niels Grabe, Martin Haag, Ursula Hübner, Ulrich Sax, Carsten Oliver Schmidt, Martin Sedlmayr, Antonia Zapf (Eds.), German Medical Data Sciences 2023 – Science. Close to People. (pp. 258-266). IOS Press.
- Siegling, M., & Erfurt-Berge, C. (2023). Malignome als Ursache von chronischen Wunden. Chirurgische Praxis, 90(2), 300-309.
- Siegling, M., Renner, R., & Erfurt-Berge, C. (2023). Mobility range, level of pain and sleep quality of patients with venous leg ulcers. International Wound Journal. https://doi.org/10.1111/iwj.14195
2022
- Andriessen, A.E., Wiegand, C., Eberlein, T., Erfurt-Berge, C., & Roes, C. (2022). Clinical Experience Using a Monofilament Fiber Cleansing and Debriding Technology for Various Skin Conditions. Journal of Drugs in Dermatology, 21(11), 1173-1180. https://doi.org/10.36849/JDD.6261
- Dissemond, J., Bueltemann, A., Gerber, V., Motzkus, M., Muenter, K.C., & Erfurt-Berge, C. (2022). Position paper of the Initiative Chronische Wunde (ICW) e. V. on the nomenclature of debridement in chronic wounds Positionspapier der Initiative Chronische Wunde (ICW) e. V. zur Nomenklatur des Débridements chronischer Wunden. Hautarzt. https://doi.org/10.1007/s00105-022-04944-3
- Dissemond, J., Bueltemann, A., Gerber, V., Motzkus, M., Münter, C., & Erfurt-Berge, C. (2022). Lokaltherapeutisches Vorgehen bei Blasen der Haut: Ein Positionspapier der Initiative Chronische Wunden (ICW) e. V. Die Dermatologie, 73(10), 795-800. https://doi.org/10.1007/s00105-022-05013-5
- Dissemond, J., Protz, K., Erfurt-Berge, C., Kröger, K., & Kottner, J. (2022). Wound treatment without curative intention: position paper of the Initiative Chronische Wunden (ICW) e. V. Wundbehandlung ohne kurative Zielsetzung: Ein Positionspapier der Initiative Chronische Wunden (ICW) e. V. Hautarzt. https://doi.org/10.1007/s00105-022-04973-y
- Erfurt-Berge, C., & Renner, R. (2022). Interdisciplinary Approach to the Diagnosis and Treatment of Leg Ulcers. Phlebologie, 51(5), 259-268. https://doi.org/10.1055/a-1916-1202
- Hüsers, J., Hafer, G., Heggemann, J., Wiemeyer, S., Przysucha, M., Dissemond, J.,... Hübner, U. (2022). Automatic Classification of Diabetic Foot Ulcer Images - A Transfer-Learning Approach to Detect Wound Maceration. In John Mantas, Arie Hasman, Mowafa S. Househ, Parisis Gallos, Emmanouil Zoulias, Joseph Liasko (Eds.), Studies in Health Technology and Informatics (pp. 301-304). IOS Press BV.
- Hüsers, J., Moelleken, M., Richter, M.L., Przysucha, M., Malihi, L., Busch, D.,... Hübner, U. (2022). An Image Based Object Recognition System for Wound Detection and Classification of Diabetic Foot and Venous Leg Ulcers. Studies in Health Technology and Informatics, 294, 63-67. https://doi.org/10.3233/SHTI220397
- Kaufmann, M., Erfurt-Berge, C., & Wörl, P. (2022). Atypische Mykobakteriose unter TNF-Blocker. Deutsches Ärzteblatt international, 119(21), 372-. https://doi.org/10.3238/arztebl.m2022.0051
- Kerstan, A., Dieter, K., Niebergall-Roth, E., Dachtler, A.-K., Kraft, K., Stücker, M.,... Kluth, M. (2022). Allogeneic ABCB5+ mesenchymal stem cells for treatment-refractory chronic venous ulcers: a phase I/IIa clinical trial. JID Innovations, 2(1). https://doi.org/10.1016/j.xjidi.2021.100067
- Malihi, L., Hüsers, J., Richter, M.L., Moelleken, M., Przysucha, M., Busch, D.,... Hübner, U. (2022). Automatic Wound Type Classification with Convolutional Neural Networks. In John Mantas, Parisis Gallos, Emmanouil Zoulias, Arie Hasman, Mowafa S. Househ, Marianna Diomidous, Joseph Liaskos, Martha Charalampidou (Eds.), Advances in Informatics, Management and Technology in Healthcare. (pp. 281-284). IOS Press.
- Rechtien, L., Erfurt-Berge, C., & Sticherling, M. (2022). SCLE manifestation after mRNA COVID-19 vaccination. Journal of the European Academy of Dermatology and Venereology. https://doi.org/10.1111/jdv.17895
- Renner, R., & Erfurt-Berge, C. (2022). How does Nutrition Affect Wound Healing? Phlebologie, 51(03), 148-152. https://doi.org/10.1055/a-1808-9781
- Ronicke, M., Baur, A., Kirr, M., Erdmann, M., Erfurt-Berge, C., & Ostalecki, C. (2022). Epidermotropie von Immunzellen unterscheidet Pyoderma gangraenosum vom Ulcus cruris venosum. Journal der Deutschen Dermatologischen Gesellschaft, 20(5), 619-628. https://doi.org/10.1111/ddg.14708_g
- Ronicke, M., Baur, A., Kirr, M., Erdmann, M., Erfurt-Berge, C., & Ostalecki, C. (2022). Epidermotropism of inflammatory cells differentiates pyoderma gangrenosum from venous leg ulcers. Journal der Deutschen Dermatologischen Gesellschaft. https://doi.org/10.1111/ddg.14708
- Siegling, M., & Erfurt-Berge, C. (2022). Malignome als Ursache von chronischen Wunden. Internistische Praxis, 65(1), 67-76.
- Siegling, M., & Erfurt-Berge, C. (2022). Malignome als Ursache von chronischen Wunden. Tägliche Praxis, 66(2), 260-269.
- Wittbecker, L., Pham, C., Bandholz, T.C., Schuh, S., Welzel, J., Busse, L.,... Glaeser, R. (2022). "Toolkit Dermatology for minor surgical Procedures" - Options of Use at various University Locations during the Corona Pandemic. In JOURNAL DER DEUTSCHEN DERMATOLOGISCHEN GESELLSCHAFT (pp. 39-40). HOBOKEN: WILEY.
- Wittbecker, L.M., Pham, C., Wohlgemuth, L.K., Hoang, M.A., Bandholz, T.C., Schuh, S.,... Welzel, J. (2022). Digital and innovative teaching in dermatology Practically oriented teaching online. Die Dermatologie. https://doi.org/10.1007/s00105-022-05062-w
2021
- Dietmaier, L., Summa, S., & Erfurt-Berge, C. (2021). Spectrum of peristomal Dermatoses. In JOURNAL DER DEUTSCHEN DERMATOLOGISCHEN GESELLSCHAFT (pp. 137-137). HOBOKEN: WILEY.
- Erfurt-Berge, C., Heusinger, V., Reinboldt-Jockenhöfer, F., Dissemond, J., & Renner, R. (2021). Comorbidity and Therapeutic Approaches in Patients with Necrobiosis Lipoidica. Dermatology. https://doi.org/10.1159/000514687
- Erfurt-Berge, C., Michler, M., & Renner, R. (2021). Versorgungszustand von Patienten vor Zuweisung an ein universitäres Wundzentrum. Hautarzt. https://doi.org/10.1007/s00105-021-04759-8
- Erfurt-Berge, C., & Renner, R. (2021). Interdisciplinary Approach to Diagnostic and Therapy of Ulcus cruris. Aktuelle Dermatologie, 47(01/02), 55-67. https://doi.org/10.1055/a-1102-6894
- Ronicke, M., & Erfurt-Berge, C. (2021). Impaired Wound Healing with Imatinib Mesylate Therapy. Advances in Skin & Wound Care, 34(2), 109-111. https://doi.org/10.1097/01.ASW.0000725176.48771.0f
- Schiffmann, M.-L., Dissemond, J., Erfurt-Berge, C., Hafner, J., Itzlinger-Monshi, B.A., Jungkunz, H.W.,... Goerge, T. (2021). German S1 guideline: diagnosis and treatment of livedovasculopathy. Journal der Deutschen Dermatologischen Gesellschaft. https://doi.org/10.1111/ddg.14520
- Schiffmann, M.L., Dissemond, J., Erfurt-Berge, C., Hafner, J., Itzlinger-Monshi, B.A., Jungkunz, H.W.,... Goerge, T. (2021). S1-Leitlinie Diagnostik und Therapie der Livedovaskulopathie. Journal der Deutschen Dermatologischen Gesellschaft, 19(11), 1667-1678. https://doi.org/10.1111/ddg.14520_g
- Stücker, M., Münter, K.C., Erfurt-Berge, C., Lützkendorf, S., Eder, S., Möller, U., & Dissemond, J. (2021). Multicomponent compression system use in patients with chronic venous insufficiency: A real-life prospective study. Journal of Wound Care, 30(5), 400-412. https://doi.org/10.12968/jowc.2021.30.5.400
- Summa, S., Hofmann, G., & Erfurt-Berge, C. (2021). Stoma care in pyoderma gangrenosum. Coloproctology. https://doi.org/10.1007/s00053-021-00580-y
- Toussaint, F., Erdmann, M., Berking, C., & Erfurt-Berge, C. (2021). Malignant Tumours Presenting as Chronic Leg or Foot Ulcers. Journal of Clinical Medicine, 10(11). https://doi.org/10.3390/jcm10112251
2020
- Bergendahl, L., Werner, F., Schmidt, A., Ronicke, M., Renner, R., & Erfurt-Berge, C. (2020). Development and evaluation of an interprofessional teaching concept for modern wound management. Journal der Deutschen Dermatologischen Gesellschaft. https://doi.org/10.1111/ddg.14230
- Bergendahl, L., Werner, F., Schmidt, A., Ronicke, M., Renner, R., & Erfurt-Berge, C. (2020). Entwicklung und Evaluation eines interprofessionellen Lehrkonzepts zum modernen Wundmanagement. Journal der Deutschen Dermatologischen Gesellschaft, 18(9), 977-983. https://doi.org/10.1111/ddg.14230_g
- Busch, D., Bogdan, C., & Erfurt-Berge, C. (2020). Clinical Manifestation of Cutaneous Leishmaniasis Following a Mechanical Trauma. International Journal of Lower Extremity Wounds. https://doi.org/10.1177/1534734620968964
- Erfurt-Berge, C., & Renner, R. (2020). Quality of life in patients with chronic wounds Lebensqualität bei Patienten mit chronischen Wunden. Hautarzt. https://doi.org/10.1007/s00105-020-04673-5
- Erfurt-Berge, C., Schmidt, A., Angelovska, I., & Mahler, V. (2020). Beruflich erworbene MRSA-Besiedelung in der berufsdermatologischen Begutachtung (BK-Nr. 3101). Hautarzt. https://doi.org/10.1007/s00105-020-04616-0
- Erfurt-Berge, C., & Sticherling, M. (2020). Successful treatment of ulcerative necrobiosis lipoidica with JAK inhibitor. Journal of the European Academy of Dermatology and Venereology. https://doi.org/10.1111/jdv.16297
- Renner, R., & Erfurt-Berge, C. (2020). Was hat die Ernährung mit der Wundheilung zu tun? Aktuelle Dermatologie, 46(6), 260-264. https://doi.org/10.1055/a-0975-6778
- Schlupeck, M., Stubner, B., & Erfurt-Berge, C. (2020). Development and evaluation of a digital education tool for medical students in wound care. International Wound Journal. https://doi.org/10.1111/iwj.13498
- Toussaint, F., Erdmann, M., Berking, C., & Erfurt-Berge, C. (2020). Malignant Tumors as important Differential Diagnosis of chronic Ulcers. In JOURNAL DER DEUTSCHEN DERMATOLOGISCHEN GESELLSCHAFT (pp. 79-79). HOBOKEN: WILEY.