1 Department of Medical Psychology, Center for Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, D-20246 Hamburg, Germany. Electronic address: m.haerter@uke.uni-hamburg.de.
2 Lyon 1 University, Léon Bérard Cancer Centre, HESPER EA 7425, 8 avenue Rockefeller 69373 Lyon Cedex 08, France. Electronic address: nora.moumjid@univ-lyon1.fr.
3 Department of Ambulatory Care and Community Medicine, University of Lausanne, Bugnon Avenue 21, 1011 Lausanne, Switzerland. Electronic address: Jacques.Cornuz@chuv.ch.
4 The Dartmouth Institute for Health Policy and Clinical Practice, Level 5, Williamson Translational Research Building, 1 Medical Center Drive, Lebanon NH 03756, USA. Electronic address: glynelwyn@gmail.com.
5 School Caphri, Department of Family Medicine, PO Box 616, 6200 MD Maastricht, the Netherlands. Electronic address: trudy.vanderweijden@maastrichtuniversity.nl.