RT Journal Article SR Electronic T1 Response: Use of Drug Sample Medications JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 86 OP 87 DO 10.3122/jabfm.16.1.86 VO 16 IS 1 A1 Sean Schafer A1 John Zweifler A1 Susan Hughes YR 2003 UL http://www.jabfm.org/content/16/1/86.1.abstract AB