Authors: Vicki Erasmus; Anita Huis; Anke Oenema; Pepijn van Empelen; Matthijs C Boog; Elise H E van Beeck; Suzanne Polinder; Ewout W Steyerberg; Jan Hendrik Richardus; Margreet C Vos; Ed F van Beeck Journal: BMC Public Health Date: 2011-09-24 Impact factor: 3.295