Cardiac changes in pregnant Shih Tzu bitches by echocardiography - Tavares de Almeida, V. [UNESP]; Correia Dos Santos, V. J. [UNESP]; Del Aguila Da Silva, P. [UNESP]; Azadinho Rosa, F. [UNESP]; Ramirez Uscategui, R. A. [UNESP]; Rossi Feliciano, M. A. [UNESP]; Maronezi, M. C. [UNESP]; Vicente, W. R. R. [UNESP] (Wiley-Blackwell, 2016)