Bruyninckx, Rudia; Van den Bruel, Anna; Aertgeerts, Berta; Van Casteren, Vivianeb; Buntinx, Franka c
aDepartment of General Practice, KULeuven, Leuven
bDepartment of Epidemiology, Scientific Institute of Public Health, Brussels, Belgium
cResearch Institute Caphri, Universiteit Maastricht, Maastricht, The Netherlands
Correspondence to Dr Rudi Bruyninckx, ACHG KULeuven, Kapucijnenvoer 33 Blok j, postbus 7001, Leuven 3000, Belgium
Tel: +32 16 33 74 93; fax: +32 16 33 74 80;
e-mail: [email protected]
Received 14 December 2007 Accepted 26 March 2008
doi: 10.1097/MEJ.0b013e328302c840