1. Cedars-Sinai Kerlan-Jobe Institute, 2020 Santa Monica Blvd. Suite 400, Santa Monica, CA 90404, USA
2. Riverside University Health System, Department of Orthopedic Surgery, 26520 Cactus Ave. Suite B2042, Moreno Valley, CA 92555, USA
3. Pacific Coast Hernia Center, 2001 Santa Monica Blvd. Suite 890, Santa Monica, CA 90404, USA
4. Rush University Medical Center, Midwest Orthopaedics, 1611 W. Harrison Ave. Suite 300, Chicago, IL 60612, USA