Haghighi Khoshkhoo,, پیام, Akbari-Azad,, G., Inanlo,, J., Masomi, , M. “Seroperivalence of Mycoplasma synoviae infection in commercial layer farms of Alborz and Qazvin provinces.” journal of veterinary clinical research, vol. 2, no. 3, 2011, pp. 147-154.