1. Paklihawa Campus, Institute of Agriculture and Animal Science (IAAS), Tribhuvan University, Siddarthanagar 32900, Nepal
2. Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
3. Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA
4. Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
5. Department of Pharmacology, Dalian Medical University, Dalian 116041, China