Headquarters

	Prof. Marco Bueter, PhD (PI) Surgeon, Chief of Bariatric Program University Hospital Zurich Switzerland
	Dr. Daniel Gero (co-PI) Bariatric research fellow / PhD candidate University Hospital Zurich Switzerland
	Dr. Henner Schmidt (co-PI) Chief Resident, Upper GI Surgery University Hospital Zurich Switzerland
	Dr. Dimitri Raptis, MSc, PhD  Senior Clinical Fellow Platform, Study Design, Biostatistics Royal Free Hospital, London, UK

• Department of Surgery and Transplantation
  University Hospital Zürich
  Rämistrasse 100, CH-8091 Zürich
  Switzerland
• Telefon: +41 (0)44 255 8895
• Fax: +41 (0)44 255 8941
• Email: daniel.gero @ usz.ch
• URL: http://www.vis.usz.ch/

 Adipositas Zürich

Collaborators and Participating Centers 

Europe:

• Marco Bueter, University Hospital Zurich, Switzerland
• Jaques Himpens, St Pierre University Hospital, Brussels, Belgium
• Rudolf Weiner, Sana Klinikum, Offenbach, Germany
• Antonio Torres, Complutense University of Madrid, Spain
• Gerhard Prager, Medical University of Wien, Austria
• Richard Welbourn, Musgrove Park Hospital, Taunton, UK
• Torsten Olbers, University of Gothenburg, Sweden
• Bruno Dillemans, AZ Sint-Jan Hospital in Bruges, Belgium
• Dimitri Pournaras, Bristol, UK
• Ignace Janssen, Rijnstate Hospital, Arnhem, The Netherlands
• Antonio Iannelli, University Hospital Nice, France
• Carel Le Roux, University College Dublin
• Ralph Peterli, Basel, Switzerland

North America:

• Raul Rosenthal, Cleveland Clinic, Weston, Florida, USA
• Kelvin Higa, UCSF - Fresno Medical Education Program, California, USA
• Sivamainthan Vithiananthan, Brown University - The Miriam Hospital, Providence, Rhode Island, USA

South America:

• Ricardo Cohen, Oswaldo Cruz German Hospital, Sao Paolo, Brazil
• Ramos Almino, Gastro-Obeso-Center Advanced Medical Institute, Sao Paulo, Brazil 
• Camilo Boza and Marcos Berry, Clínica Las Condes, Santiago, Chile
• Matias Sepulveda, Hospital Dipreca Santiago Región Metropolitana, Chile