WALTER L. BIERRING, M.D., AND THE AMERICAN BOARD OF PREVENTIVE MEDICINE.
D005006:Ethnicity; D049672:History, 19th Century; D049673:History, 20th Century; D011315:Preventive Medicine; D012952:Societies; D012955:Societies, Medical; D014481:United States
OBITUARIES; PREVENTIVE MEDICINE; SOCIETIES, MEDICAL; UNITED STATES