1. Department of Infectious Diseases and Hospital Hygiene, Cantonal Hospital Aarau, Switzerland
2. Deputy Cantonal Physician, Canton Aargau, Switzerland
3. Department of Gastroenterology and Hepatology, Cantonal Hospital Aarau, Switzerland
4. Department of Infectious Diseases, Cantonal Hospital Baden, Switzerland
5. Department of Gastroenterology, Cantonal Hospital Baden, Switzerland
6. Department of Addictive Disorders, Psychiatric Services Aargau, Brugg, Switzerland
7. General Practitioner, Baden, Switzerland