Osteonecrosis

• 3rd Orthopaedic and Traumatologic Clinic, prevalently oncologic, Rizzoli Orthopaedic Institute — Bologna, Italy
• S.S.D. Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute — Bologna, Italy
• Orthopaedic and Traumatologic Department Policlinico di Modena — Modena, Italy

• Beth Israel Deaconess Medical Center — Boston, Massachusetts, United States

• Aarhus University Hospital, Department of Orthopaedic Surgery, Tage-Hansens Gade 2 — Aarhus C, Aarhus County, Denmark

• West Coast Clinical Trials (WCCT) — Cypress, California, United States
• Diablo Clinical Research — Walnut Creek, California, United States
• Altoona Center for Clinical Research — Duncansville, Pennsylvania, United States
• Metroplex Clinical Research Center — Dallas, Texas, United States

Not specified

• Nagasaki University — Nagasaki, Japan
• Osaka Koseinenkin Hospital — Osaka, Japan
• Hashiba Orthopaedic Clinic — Toyama, Japan
• Toyama Municipal Hospital — Toyama, Japan

Not specified

• Sinai Hospital of Baltimore — Baltimore, Maryland, United States
• University of Minnesota Department of Orthopaedic Surgery — Minneapolis, Minnesota, United States
• Lutheran Medical Center — Brooklyn, New York, United States

Not specified

• Ewha Womans University Mokdong Hosptial — Seoul, South Korea