Jan C Winters, Jan S Sobel, Klaas H Groenier, Hans J Arendzen, Betty Meyboom-de Jong
Winters J C, Sobel J S, Groenier K H, Arendzen H J, Jong B M.
Comparison of physiotherapy, manipulation, and corticosteroid injection for treating shoulder complaints in general practice: randomised, single blind study
BMJ 1997; 314 :1320
doi:10.1136/bmj.314.7090.1320