RT Journal Article SR Electronic T1 Obstetrics in Family Practice JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 257 OP 257 DO 10.3122/jabfm.8.3.257 VO 8 IS 3 A1 Sara G. Shields YR 1995 UL http://www.jabfm.org/content/8/3/257.1.abstract AB