Affiliation: | (1) Department of Surgery, University Hospital Maastricht, PO Box 5800, 6202 AZ Maastricht, the Netherlands;(2) Department of Clinical Epidemiology & Medical Technology Assessment, University Hospital Maastricht, Maastricht, the Netherlands;(3) Nutrim, Maastricht University, Maastricht, the Netherlands;(4) Tromso, Norway |