Flint J, Burton S, Macey J F, Deeks S L, Tam T W, King A, Bodie-Collins M, Naus M, MacDonald D, McIntyre C, Krajden M, Petric M, Halpert C, Gustafson L, Larder A
Immunization and Respiratory Infections Division, Centre for Infectious Disease Prevention and Control (CIDPC), Health Canada.
Can Commun Dis Rep. 2003 Jun 15;29(12):105-10.