LaMonte MJ, Wactawski-Wende J, Larson JC, Mai X, Robbins JA, LeBoff MS, Chen Z, Jackson RD, LaCroix AZ, Ockene JK, Hovey KM, Cauley JA. Association of Physical Activity and Fracture Risk Among Postmenopausal Women. JAMA Netw Open. 2019 10 02; 2(10):e1914084.