Number of persons who consulted a physician, 1997 and 2002.
D000328:Adult; D002648:Child; D005194:Family Practice; D005260:Female; D006801:Humans; D008511:Medicine; D009774:Obstetrics; D009819:Office Visits / Q000706:statistics & numerical data*; D011247:Pregnancy; D013038:Specialization; D014481:United States