1. University Hospital of Leipzig; Institute of Medical Psychology and Medical Soziology; Philipp-Rosenthal-Straße 55 Leipzig Saxony Germany 4103
2. University Hospital of Jena; Institute of Psychosocial Medicine and Psychotherapy; Stoystrasse 3 Jena Thuringia Germany 07743
3. UniversityHospital and University of Zurich; Institute for Complementary and Integrative Medicine; Sonneggstrasse 6 Zurich Switzerland CH-8091