RT Journal Article SR Electronic T1 Prologue JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 1-S OP 1-S DO 10.3122/jabfm.3.1S.1-S VO 3 IS 1S A1 Young, Paul R. YR 1990 UL http://www.jabfm.org/content/3/1S/1-S.abstract AB