1. Institute of Social and Preventive Medicine (ISPM) University of Bern Bern Switzerland
2. Swiss Paraplegic Research Nottwil Switzerland
3. Graduate School for Health Sciences University of Bern Bern Switzerland
4. 2nd Department of Obstetrics and Gynecology, Medical School, Aretaieio Hospital National and Kapodistrian University of Athens Athens Greece
5. Department of Nuclear Medicine University Hospital Zurich Zurich Switzerland
6. Department of Nuclear Medicine, Lausanne University Hospital (CHUV) University of Lausanne Lausanne Switzerland