RT Journal Article SR Electronic T1 On Call: Obstetrics and Gynecology JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 382 OP 383 DO 10.3122/jabfm.10.5.382b VO 10 IS 5 A1 Larsen, Kathryn M. YR 1997 UL http://www.jabfm.org/content/10/5/382.abstract AB