RT Journal Article SR Electronic T1 Effectiveness of Cough Syrups JF The Journal of the American Board of Family Practice JO J Am Board Fam Med FD American Board of Family Medicine SP 429 OP 429 DO 10.3122/jabfm.6.4.429 VO 6 IS 4 A1 Paul Pisarik YR 1993 UL http://www.jabfm.org/content/6/4/429.1.abstract AB