00802nam 2200169z- 450 9910712344203321(CKB)5470000002492691(EXLCZ)99547000000249269120230509c1981uuuu -u- -engPatients' reasons for visiting physicians : the National Ambulatory Medical Care Survey, United States, 1977-78U.S. Department of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health StatisticsHyattsville, MdPatients' reasons for visiting physicians BOOK9910712344203321Patients' reasons for visiting physicians : the National Ambulatory Medical Care Survey, United States, 1977-783283056UNINA