Paula Hakala, Arja Rimpelä, Jouko J Salminen, Suvi M Virtanen, Matti Rimpelä
Hakala P, Rimpelä A, Salminen J J, Virtanen S M, Rimpelä M.
Back, neck, and shoulder pain in Finnish adolescents: national cross sectional surveys
BMJ 2002; 325 :743
doi:10.1136/bmj.325.7367.743