Gurwitz, J. H., Sykora, K., Mamdani, M., Streiner, D. L., Garfinkel, S., Normand, S. T., . . . Rochon, P. A. (2005). Reader's guide to critical appraisal of cohort studies: 1. Role and design. BMJ Publishing Group Ltd.

Gurwitz, Jerry H., Kathy Sykora, Muhammad Mamdani, David L. Streiner, Susan Garfinkel, Sharon-Lise T. Normand, Geoffrey M. Anderson, and Paula A. Rochon. Reader's Guide to Critical Appraisal of Cohort Studies: 1. Role and Design. BMJ Publishing Group Ltd, 2005.

Gurwitz, Jerry H., et al. Reader's Guide to Critical Appraisal of Cohort Studies: 1. Role and Design. BMJ Publishing Group Ltd, 2005.