Electrocardiographic consequences of a peripatetic lifestyle in gray wolves (Canis lupus) - Constable, Peter; Hinchcliff, Ken; Demma, Nick; Callahan, Margaret; Dale, Bruce; Fox, Kevin; Adams, Layne G.; Wack, Ray; Kramer, Lynn (Comparative Biochemistry and Physiology, Part A: Molecular & Integrative Physiology, 1998)