Avian metapneumovirus subtypes circulating in Brazilian vaccinated and nonvaccinated chicken and turkey farms - Chacón, Jorge Luis; Mizuma, Matheus; Vejarano Ruibal, Maria Del Pilar; Toquín, Didier; Eterradossi, Nicolas; Patnayak, D. P; Goyal, S. M; Ferreira, Antonio José Piantino (Avian Diseases, 2011)