RT Journal Article SR Electronic T1 Too much of a good thing? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1309 OP E1310 DO 10.1503/cmaj.109-4033 VO 183 IS 18 A1 Walkinshaw, Erin YR 2011 UL http://www.cmaj.ca/content/183/18/E1309.abstract