1. Michael Smith Laboratories, Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
2. Laboratorio de Inmunología, Unidad de Investigación de Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
3. Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
4. Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
5. Laboratorio de Inmunología, UAEM Pediatría del Centro Médico Nacional SXXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
6. Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
7. Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada