title: A memoir of pediatric nuclear medicine: Part II: Challenges in the development of a subspecialty.
mesh_terms: D002648:Child; D049673:History, 20th Century; D006801:Humans; D008511:Medicine; D009683:Nuclear Medicine / Q000266:history* / Q000331:legislation & jurisprudence / Q000379:methods; D010372:Pediatrics / Q000266:history* / Q000379:methods; D019275:Radiopharmaceuticals / Q000008:administration & dosage; D013038:Specialization; D013667:Technetium / Q000627:therapeutic use; D013679:Technology, Radiologic / Q000379:methods
chemical_list: D019275:Radiopharmaceuticals; D013667:Technetium