[1] Shriners Hosp Crippled Children, Metab Res Unit, St Louis, MO 63131 USA
[2] Washington Univ, Sch Med, Div Bone & Mineral Dis, St Louis, MO USA
[3] Washington Univ, Sch Med, Edward Mallinckrodt Inst Radiol, St Louis, MO 63110 USA
[4] Orthoped Hosp, Los Angeles, CA 90007 USA
[5] Audie Murphy Vet Adm Hosp, San Diego, CA USA