UniversityHospital Zurich, Department of Pulmonology, Zurich, Switzerland
University Hospital, Zurich, Switzerland
DRK Schmerz-Zentrum Mainz, Mainz, Rheinland-Pfalz, Germany
ANNR Rehaclinic, Baden, Aargau, Switzerland
Zentrum für Schmerzmedizin, Schweizer Paraplegiker-Zentrum Nottwil, Nottwil, Luzern, Switzerland
University Hospital Zurich, Zurich, Switzerland
Hospital Clinico San Carlos, Madrid, Spain
University Hospital Zurich, University of Zurich, Zurich, Switzerland
University Hospital Zurich, Zurich, Switzerland
San Raffaele Hospital, Milano, Italy
Asklepios Klinik Hamburg St. Georg, Hamburg, Germany
Inselspital Bern, Bern, Switzerland
University Hospital Zurich, Visceral Surgery, Zurich, ZH, Switzerland
Cardiovascular Center Cardiology Univeristy Hospital of Zurich, Zurich, Switzerland
Universisty Hospital of Zurich, Cardiovascular Center Cardiology, Zurich, Switzerland
Clinic for Otorhinolaryngology University Hospital Zurich, Zurich, ZH, Switzerland