[1] Univ Cologne, Dept Paediat, Cologne, Germany
[2] Sunnaas Rehabil Hosp, TRS Natl Resource Ctr Rare Disorders, Bjornemyr, Nesodden, Norway
[3] Osteogenesis Imperfecta Federat Europe, Osteogenesis Imperfecta Federat, Heffen, Belgium
[4] Hosp Special Surg, Pediat Orthoped Surg, New York, NY USA
[5] Osteogenesis Imperfecta Fdn, Gaithersburg, MD USA
[6] Wickenstones Ltd, Market Access Consultancy, Abingdon, Oxon, England
[7] McGill Univ, Pediat Metab Bone Dis, Montreal, PQ, Canada