An assessment of mumps vaccine effectiveness by dose during an outbreak in Canada. - Deeks SL; Lim GH; Simpson MA; Gagné L; Gubbay J; Kristjanson E; Fung C; Crowcroft NS; Deeks, Shelley L; Lim, Gillian H; Simpson, Mary Anne; Gagné, Louise; et al. (Canadian Medical Association Journal (CMAJ), 2011)