Tyrrell, G. J., Lovgren, M., Forwick, B., Hoe, N. P., Musser, J. M., & Talbot, J. A. (2002). M Types of Group A Streptococcal Isolates Submitted to the National Centre for Streptococcus (Canada) from 1993 to 1999. American Society for Microbiology (ASM).

Tyrrell, Gregory J., Marguerite Lovgren, Betty Forwick, Nancy P. Hoe, James M. Musser, a James A. Talbot. M Types of Group A Streptococcal Isolates Submitted to the National Centre for Streptococcus (Canada) From 1993 to 1999. American Society for Microbiology (ASM), 2002.

Tyrrell, Gregory J., et al. M Types of Group A Streptococcal Isolates Submitted to the National Centre for Streptococcus (Canada) From 1993 to 1999. American Society for Microbiology (ASM), 2002.