1McKoy BE, Bensen CV, Hartsock LA. Fractures about the shoulder: conservative management[J]. Orthop Clln North Am, 2000, 31:205.
2Baron JA, Karagas M, Barrett J , Kniffin W, Malenka D, Keller RB. Basic epidemiology of fractures of the upper and lower limb amangAmericans over 65 years of age [ J ]. Epidemiology , 1996 , 7 ( 6 ) : 612 -618.
