Pandemic (H1N1) 2009 influenza in Canadian pediatric cancer and hematopoietic stem cell transplant patients. - Tran, Dat; Science, Michelle; Dix, David; Portwine, Carol; Zelcer, Shayna; Johnston, Donna L.; Yanofsky, Rochelle; Gassas, Adam; Ethier, Marie-Chantal; Sung, Lillian (Influenza & Other Respiratory Viruses, 2012)