Authors: Jan Lucas Hoving; Bart W Koes; Henrica C W de Vet; Danielle A W M van der Windt; Willem J J Assendelft; Henk van Mameren; Walter L J M Devillé; Jan J M Pool; Rob J P M Scholten; Lex M Bouter Journal: Ann Intern Med Date: 2002-05-21 Impact factor: 25.391