RT Journal Article SR Electronic T1 Medical podcasts going viral JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1577 OP 1578 DO 10.1503/cmaj.109-3955 VO 183 IS 14 A1 Erin Walkinshaw YR 2011 UL http://www.cmaj.ca/content/183/14/1577.abstract