SWITZERLAND

Cantonal Hospital St. Gallen

Langenthal Surgical

Bariatric Surgical Hospital Bern

Rorschach Hospital St. Gallen

Hirslanden Clinic Zurich

HONG KONG

Prince of Wales Hospital

NORWAY

Haukeland Hospital Bergen

Aleris Hospital Oslo

ICELAND

University Hospital Iceland

DENMARK

Hvidovre University Hospital

Aarhus University Hospital

Aleris-Hamlet Private Hospital

Eira Private Hospital Aarhus

Herning General Hospital

University Hospital of Copenhagen

SWEDEN

Aleris Obesitas Skane

JAPAN

Jichi Medical School Toschgi Ken

GERMANY

University of Lübeck

Johannes Gutenberg University