Haghighi Khoshkhoo,, پیام, Akbari-Azad,, گیتا, Roohi,, مسعود, Sami-Yousef,, پدرام. “Seroprevalence of Mycoplasma gallisepticum infection in commercial layer farms in Alborz and Qazvin provinces.” journal of veterinary clinical research, vol. 1, no. 3, 2010, pp. 181-187.