RT Journal Article SR Electronic T1 The benefits of apolipoprotein E ε4 screening to research JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 881 OP 881 DO 10.1503/cmaj.1041189 VO 171 IS 8 A1 Gauthier, Serge YR 2004 UL http://www.cmaj.ca/content/171/8/881.abstract