Caswell JL, Bassel LL, Rothenburger JL, Gröne A, Sargeant JM, Beck AP, Ekman S, Gibson-Corley KN, Kuiken T, LaDouceur EEB, Meyerholz DK, Origgi FC, Posthaus H, Priestnall SL, Ressel L, Sharkey L, Teixeira LBC, Ward JM, Webster JD, Yamate J. 2018. Observational study design in veterinary pathology. Part 2: methodology and validation of methods. Veterinary Pathology. 55(6):774-785. doi: 10.1177/0300985818798121
