Sinus arrest associated with ruptured pyometra in a dog - Ramirez Uscategui, R. [UNESP]; Vitti Moro, J. [UNESP]; Russiano Vicente, W. [UNESP]; Macenti, B. [UNESP]; Ribeiro Gutierrez, R. [UNESP] (Wiley-Blackwell, 2012)