1. Department of Anatomy; Institute of Biomedical Sciences-ICB III; University of São Paulo; São Paulo Brazil
2. Laboratory of Morphology-LAMAF; Institute of Biosciences; São Paulo State University-UNESP; Rio Claro-SP Brazil
3. Department of Surgery; Faculty of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
4. Universidade Federal dos Vales do Jequitinhonha e Mucurí; Unaí, MG Brazil