RT Journal Article SR Electronic T1 Exposure to bisphenol A in Canada: invoking the precautionary principle JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1265 OP 1270 DO 10.1503/cmaj.101408 VO 183 IS 11 A1 Laura N. Vandenberg YR 2011 UL http://www.cmaj.ca/content/183/11/1265.abstract