TY - JOUR T1 - Do food additives cause hyperactivity in preschool children? JF - Canadian Medical Association Journal JO - CMAJ SP - 450 LP - 450 DO - 10.1503/cmaj.1041187 VL - 171 IS - 5 AU - Paul A. Kurdyak Y1 - 2004/08/31 UR - http://www.cmaj.ca/content/171/5/450.abstract ER -