RT Journal Article SR Electronic T1 Seasonality and H1N1 JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 593 OP 593 DO 10.1503/cmaj.110-2039 VO 182 IS 6 A1 Schabas, Richard YR 2010 UL http://www.cmaj.ca/content/182/6/593.1.abstract