From 1930 to 1963 Helen Taussig, who helped to develop the blue baby operation, headed the pediatric cardiac clinic. Child psychiatrist Leo Kanner did studies of autistic children. Lawson Wilkins established an endocrine clinic that developed procedures used universally to treat children with certain glandular disorders, including dwarfism. John E. Bordley and William G. Hardy broke ground in detecting hearing impairments in very young children. It became a renowned pediatric facility; the Harriet Lane Outpatient Clinics serve thousands of children today, and the widely used manual for pediatric house officers, "The Harriet Lane Handbook", bears her name.