RT Journal Article SR Electronic T1 Rural Obstetric Care JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 141 OP 141 DO 10.3122/jabfm.2.2.141 VO 2 IS 2 A1 William Zeller YR 1989 UL http://www.jabfm.org/content/2/2/141.1.abstract AB