RT Journal Article SR Electronic T1 Research Letter JF The Journal of the American Board of Family Medicine JO J Am Board Fam Med FD American Board of Family Medicine SP 648 OP 648 DO 10.3122/jabfm.19.6.648 VO 19 IS 6 A1 Ariel Smits A1 Patricia A. Carney A1 Jeanene Smith A1 John W. Saultz YR 2006 UL http://www.jabfm.org/content/19/6/648.abstract AB