Baltimore, Maryland. For this operation Carson was able to prepare by studying a three-dimensional physical model of the twins' anatomy. Carson described this separation as the first of its kind, with 23 similar attempted separations ending in the death of one or both twins. Notable staff Ben Carson - Former chief of pediatric neurosurgery, former Secretary of H.U.D. former presidential candidate Leo Kanner - Founder of the specialty, Child and Adolescent psychiatry Helen B. Taussig - Pioneer of the pediatric cardiology specialty Catherine Neill Lawson Wilkins Edwards A. Park Vivien Thomas See also List of Children's Hospitals in the United States Johns Hopkins School of Medicine Johns Hopkins Hospital Ben Carson Johns Hopkins All Children's Hospital Center for Talented Youth References External links Hopkins Children's Center website Children's hospitals in the United States Hospital buildings completed in 2012 Johns Hopkins Medical Institutions Hospitals in Maryland Teaching hospitals in Maryland Hospital buildings completed in 1964 Pediatric trauma centers