Questionnaires are filled in at participants home addresses, The Netherlands, Netherlands
Rijnstate Hospital, Arnhem, Netherlands
Department of Vascular Medicine UMC Utrecht, Utrecht, Netherlands
University Medical Center utrecht, Utrecht, Netherlands
Julius Center for Health Sciences and Primary Care, UMC Utrecht, Utrecht, Netherlands
Medical Center Leeuwarden, Leeuwarden, Friesland, Netherlands
Gelre Hospitals; lukas site, Apeldoorn, Gelderland, Netherlands
Erasmus Medical Center, Rotterdam, Zuid-Holland, Netherlands
Academic Medical Center Amsterdam, Amsterdam, Noord-Holland, Netherlands
Meander Medical Center Amersfoort, Amersfoort, Utrecht, Netherlands
University Medical Center Utrecht, Utrecht, Netherlands
University Medical Center Utrecht, Utrecht, Netherlands
University Medical Center Utrecht, Utrecht, Netherlands
University Medical Center, Utrecht, Netherlands
Maasstad Ziekenhuis, Rotterdam, Zuid-Holland, Netherlands
University Medical Center, Utrecht, Netherlands
Amphia hospital, Breda, Brabant, Netherlands