[Pioneers in pediatric medicine. William Eduard Ladd (1880-1967)].
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D001900:Boston; D013502:General Surgery / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D010372:Pediatrics / Q000266:history*
Pioniere der Kinderheilkunde. William Eduard Ladd (1880-1967).