Avascular Necrosis of the Femoral Head

• UC Davis Health System — Sacramento, California, United States
• Florida Orthopaedic Institute — Gainesville, Florida, United States
• Northwell Health — Lake Success, New York, United States
• Montefiore Medical Center — The Bronx, New York, United States

• University of Southern California — Los Angeles, California, United States
• Stanford University — Stanford, California, United States
• Sinai Hospital of Baltimore — Baltimore, Maryland, United States
• Johns Hopkins University — Baltimore, Maryland, United States

• OrthoCarolina/OrthoCarolina Research Institute — Charlotte, North Carolina, United States
• Orthopedic & Fracture Specialists — Portland, Oregon, United States

• Herz-Jesu Krankenhaus — Vienna, Austria
• Istituto Ortopedico Galezzi — Milan, Italy
• Bürgerspital Solothurn — Solothurn, Switzerland
• The Elective Orthopaedic Centre (EOC) — Epsom, Surrey, United Kingdom

• Hôpital Privé de la Châtaigneraie — Beaumont, France
• CH de Marmande - CHIC — Marmande, France
• Hôpital Privé du Grand Narbonne — Montredon-des-Corbières, France
• Polyclinique Grand Sud — Nîmes, France

• Inner Mongolia Baogang Hospital — Baotou, Inner Mongolia, China

• Louisville, Kentucky, United States
• Boston, Massachusetts, United States
• Rochester, Minnesota, United States
• Lebanon, New Hampshire, United States

• Ministry of Health — Baghdad, Iraq

• Department of Orthopaedic Surgery, Hôpital Henri Mondor — Créteil, France
• Department of Orthopaedic Surgery, CHU Tours — Tours, France
• University Children's Hospital — Tübingen, Germany
• Department of Orthopaedic Trauma, University of Ulm — Ulm, Germany

Not specified