On the course of low back pain in general practice: a one year follow up study
Hans J M van den Hoogen, Bart W Koes, Jacques Th M van Eijk, Lex M Bouter, Walter Devillé
Annals of the Rheumatic Diseases Jan 1998, 57 (1) 13-19; DOI: 10.1136/ard.57.1.13
