Preliminary study of Porcine circovirus type 2 and Torque teno sus virus coinfection frequencies in Brazilian pig herds - Castro, Alessandra Marnie Martins Gomes de; Favero, Cintia Maria; Baldin, Cintia Manzatto; Borba, Mauro; Castro Júnior, Fernando Gomes de; Miyashiro, Simone; Moura, Jose Carlos de; Dias, Ricardo Augusto; Brandão, Paulo Eduardo; Richtzenhain, Leonardo José (Canadian Journal of Veterinary Research, 2012)