RT Journal Article SR Electronic T1 Board News JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 475 OP 476 DO 10.3122/jabfm.4.6.475 VO 4 IS 6 A1 Young, Paul R. YR 1991 UL http://www.jabfm.org/content/4/6/475.abstract AB