3Gullberg B,Johnell O,Kanis JA.World-wide projections for hip fracture[J].Osteoporos Int,1997,7:407-413.
4Zuckerman JD,skovron ML,koval KJ,et al.Postoperative complication and mortality associated with operative delay in older patients who have fracture of the hip[J].J bone Joint Surg(Am),1995,77:1551-1553.
5Hornby R,Evane JG,Vardon V.Operative or conservative treatment for trochanteric fractures of the femur.A randomized epidemiological trial in elderly patients[J].J Bone Joint Surg(Br),1989,71:619-621.
6Elliott J,Beringer T,Kee F,et al.Predicting survival after treatment for fracture of the proximal femur and the effect of delays to surgery[J].J Clin Epidemiol,2003,56(8):788-790.
