RT Journal Article SR Electronic T1 Correction JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 63 OP 63 DO 10.3122/jabfm.9.1.63 VO 9 IS 1 YR 1996 UL http://www.jabfm.org/content/9/1/63.abstract AB