Zettler, M., Mollon, B., da Silva, V., Howe, B., Speechley, M., & Vinden, C. (2010). Family physicians’ choices of and opinions on colorectal cancer screening modalities. College of Family Physicians of Canada.

Zettler, Michael, Brent Mollon, Vitor da Silva, Brett Howe, Mark Speechley, ja Chris Vinden. Family Physicians’ Choices of and Opinions On Colorectal Cancer Screening Modalities. College of Family Physicians of Canada, 2010.

Zettler, Michael, et al. Family Physicians’ Choices of and Opinions On Colorectal Cancer Screening Modalities. College of Family Physicians of Canada, 2010.