Use of Cognitive Testing, Questionnaires, and Plasma Biomarkers to Quantify Cognitive Impairment in an Aging Pet Dog Population. - Fefer G; Panek WK; Khan MZ; Singer M; Westermeyer HD; Mowat FM; Murdoch DM; Case B; Olby NJ; Gruen ME (Journal of Alzheimer's disease : JAD, 2022)