A. “Lifestyle, social factors, and survival after age 75: population based study,” by Debora Rizzuto, Nicola Orsini, Chengxuan Qiu, Hui-Xin Wang, and Laura Fratiglioni (BMJ 2012;345:e5568, HTML and .pdf format).
www.bmj.com/content/345/bmj.e5568
B. “Mortality and implant revision rates of hip arthroplasty in patients with osteoarthritis: registry based cohort study,” by D. J. W. McMinn, K. I. E. Snell, J. Daniel, R. B. C. Treacy, P. B. Pynsent, and R. D. Riley ( BMJ 2012;344:e3319, HTML and .pdf format).
