Ballock, R. Tracy M.D.; Song, Kit M. M.D.
Study conducted at Texas Scottish Rite Hospital for Children, Dallas, Texas, U.S.A.
From the Department of Pediatric Orthopedics and Scoliosis Surgery, Texas Scottish Rite Hospital for Children, Dallas, Texas, U.S.A.
Address correspondence and reprint requests to Dr. R. T. Ballock, Department of Orthopaedics, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, OH 44106, U.S.A.