1Department of Orthopedics, Kaiser Permanente Southern California, Gardena, CA, USA
2Department of Research and Evaluation, Kaiser Permanente Southern California, Gardena, CA, USA
3Bone Center of Excellence at Cedars-Sinai Medical Center, West Hollywood, CA, USA
4Department of Orthopedic Surgery, Maimonides Medical Center, Brooklyn, NY, USA
5Department of Medicine, University of Washington, Seattle, WA, USA