1. Baylor University Medical Center, Dallas, TX, USA
2. University of Texas Southwestern Medical School, Dallas, TX, USA
3. College of Medicine, Texas A&M University Health Science Center, Bryan, TX, USA
4. Department of Orthopaedic Surgery, Nara Medical University, Kashihara-shi, Nara-ken, Japan
5. Quantitative Sciences and Center for Clinical Effectiveness, Baylor Scott & White Health, Dallas, TX, USA