TY - JOUR T1 - Smoking rate drops 5% in 5 years JF - Canadian Medical Association Journal JO - CMAJ SP - 947 LP - 947 VL - 166 IS - 7 AU - Barbara Sibbald Y1 - 2002/04/02 UR - http://www.cmaj.ca/content/166/7/947.1.abstract ER -