TY - JOUR T1 - Benzene rings JF - Canadian Medical Association Journal JO - CMAJ SP - 345 LP - 345 DO - 10.1503/cmaj.1050101 VL - 173 IS - 4 AU - Jeffrey K. Atkinson Y1 - 2005/08/16 UR - http://www.cmaj.ca/content/173/4/345.1.abstract ER -