RT Journal Article SR Electronic T1 Books Received JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 230 OP 230 DO 10.3122/jabfm.3.3.230a VO 3 IS 3 YR 1990 UL http://www.jabfm.org/content/3/3/230.2.abstract AB