TY - JOUR JF - The Journal of the American Board of Family Medicine JO - J Am Board Fam Med SP - 431 LP - 431 DO - 10.3122/jabfm.19.4.431 VL - 19 IS - 4 AU - Peter S. Millard Y1 - 2006/07/01 UR - http://www.jabfm.org/content/19/4/431.1.abstract N2 - ER -