TY - JOUR T1 - Correction JF - The Journal of the American Board of Family Practice JO - J Am Board Fam Med SP - 222 LP - 222 DO - 10.3122/jabfm.2.3.222 VL - 2 IS - 3 A2 - , Y1 - 1989/07/01 UR - http://www.jabfm.org/content/2/3/222.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -