Authors: Vincent Koppelmans; Robert Schoevers; Cecile Gijsbers van Wijk; Wijnand Mulder; Annett Hornbach; Emile Barkhof; André Klaassen; Marieke van Egmond; Janine van Venrooij; Yan Bijpost; Hans Nusselder; Marjan van Herrewaarden; Igor Maksimovic; Alexander Achilles; Jack Dekker Journal: BMC Public Health Date: 2009-09-03 Impact factor: 3.295