RT Journal Article SR Electronic T1 Twin Vaginal Delivery After A Previous Cesarean Delivery For Twins JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 600 OP 603 DO 10.3122/jabfm.6.6.600 VO 6 IS 6 A1 Fogarty, John P. YR 1993 UL http://www.jabfm.org/content/6/6/600.abstract AB