1. Loyola University Chicago Stritch School of Medicine, Maywood, IL, USA.
2. Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA.
3. Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, OH, USA.
4. Department of Orthopaedic Surgery & Rehabilitation, Loyola University Health System, Maywood, IL, USA.
5. Loyola University Chicago Clinical Research Office Biostatistics Core, Maywood, IL, USA.