Osteopenia

• University of Minnesota Amplatz Children's Hospital — Minneapolis, Minnesota, United States
• Seattle Children's Hospital — Seattle, Washington, United States

• Aarhus University Hospital — Aarhus, Central Jutland, Denmark

• Institute of Medical Physics, University of Erlangen-Nurnberg — Erlangen, Bavaria, Germany

• University of Nebraska Medical Center — Omaha, Nebraska, United States

• University of Nebraska Medical Center — Omaha, Nebraska, United States

Not specified

• University of New Mexico Carrie Tingley Hospital — Albuquerque, New Mexico, United States

• University of Wisconsin Hospital and Clinics — Madison, Wisconsin, United States

• Taipei Medical University — Taipei, Taiwan

• Milton S. Hershey Medical Center — Hershey, Pennsylvania, United States