SPECIALTY CERTIFYING BOARDS IN AMERICAN MEDICINE.
D002568:Certification; D006664:History; D049673:History, 20th Century; D006801:Humans; D008007:Licensure, Medical; D008511:Medicine; D013038:Specialization; D013044:Specialty Boards; D014481:United States
HISTORY; HISTORY OF MEDICINE, 20TH CENT.; LICENSURE, MEDICAL; SPECIALISM; UNITED STATES