Authors
Małgorzata Kwaśnik
malgorzata.kwasnik@piwet.pulawy.pl
Department of Virology, National Veterinary Research Institute, Puławy, Poland
Wojciech Rożek
Department of Virology, National Veterinary Research Institute, Puławy, Poland
Jerzy Rola
Department of Virology, National Veterinary Research Institute, Puławy, Poland