Since 2018

Cooperation program between the Qatar Ministry of Health and Heidelberg University Hospital Member of the Steering Committee

Since 2016

American Surgical Association (ASA) Honorary Fellows Advisory Sub-Committee board member, Northern Europe Region

Since 2014

ESPAC-5F Trial Member of the Steering Committee

2012 - 2014

SFB/Transregio 125 "Cognition-Guided Surgery Speaker

2011 - 2014

American Surgical Association (ASA), ASA subcommittee advisory board member, Region Nordeuropa

2009 - 2013

Jung Foundation for Science and Research, Member of the Board of Trustees


German Research Foundation (DFG) Consultant "Vascular and Abdominal Surgery

2006 - 2008

International Hepato-Pancreato-Biliary Association (IHPBA) President


European Chapter of the International Hepato-Pancreato-Biliary Association (IHPBA) Congress President

Since 2004

Director of the Study Center of the German Society for Surgery (DGCH), Heidelberg University