Interobserver reliability of canine urine specific gravity assessed by analog or digital refractometers. - Rowe JC; Hokamp JA; Braatz JN; Freitag-Engstrom JR; Stephens NL; Chew DJ; Langston C; Rudinsky AJ (Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc, 2021)