University of Medicine and Dentistry of New Jersey, Newark, New Jersey, United States
University of Alabama, Birmingham, Alabama, United States
University of Michigan, Ann Arbor, Michigan, United States
Dartmouth General Hospital, Dartmouth, Nova Scotia, Canada
Stanford University, Department of Orthopedics, Stanford, California, United States
Midwest Orthopedics at RUSH University, Chicago, Illinois, United States
Physicians Clinic of Iowa, Cedar Rapids, Iowa, United States
William Harvey Hospital, Ashford, Kent, United Kingdom
Phoenix Clinical Research, Tamarac, Florida, United States
Advanced Orthopaedics, Auburn Hills, Michigan, United States
Tennessee Orthopaedic Foundation for Education and Research, Knoxville, Tennessee, United States
Emory Orthopedic Clinic, Atlanta, Georgia, United States
Leipzig Heart Center, Leipzig, Germany
University of Chicago, Chicago, Illinois, United States
University of California Davis Medical Center, Sacramento, California, United States
Williamette Neurosurgery, Salem, Oregon, United States
Sharp Rees-Stealy Medical Group, San Diego, California, United States
Southeastern Spine Center, Sarasota, Florida, United States
Foundation Surgical Hospital, Houston, Texas, United States