TY - JOUR T1 - Mammography screening among women aged 40–49 years shows no benefit JF - Canadian Medical Association Journal JO - CMAJ SP - 898 LP - 898 VL - 167 IS - 8 AU - John Hoey Y1 - 2002/10/15 UR - http://www.cmaj.ca/content/167/8/898.abstract ER -