1. Tropenmedizinische Ambulanz, Klinik für Gastroenterologie, Hepatologie und Infektiologie, Medizinische Fakultät, Heinrich-Heine Universität Düsseldorf, Germany
2. INSA National Institute of Health Dr. Ricardo Jorge, Porto, Portugal
3. Hôpital Saint Jean de Dieu, Tangueta, Benin
4. Swiss Tropical and Public Health Institute, Basel, Switzerland
5. Division of Infectious and Tropical Diseases, San Matteo Hospital Foundation, University of Pavia, Pavia, Italy
6. Epidemiology, Biostatistics and Prevention Institute, Zürich, Switzerland
7. Innere Medizin 2, Caritas Krankenhaus Bad Mergentheim, Germany