Prevalence and genotypes of Giardia duodenalis in dairy and beef cattle in farms around Charlottetown, Prince Edward Island, Canada.
Uehlinger FD, Greenwood SJ, O'Handley R, McClure JT, Coklin T, Dixon BR, de Boer M, Zwiers H, Barkema HW. Can Vet J. 2011 Sep; 52(9):967-72.