title: Emergence of a specialty.
mesh_terms: D002568:Certification; D010604:Pharmacy / Q000592:standards; D011868:Radioisotopes / Q000008:administration & dosage; D012957:Societies, Pharmaceutical / Q000458:organization & administration*; D013038:Specialization; D014481:United States
chemical_list: D011868:Radioisotopes