David E. Swayne is Laboratory Director of the Southeast Poultry Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, in Athens, Georgia, USA.
J.R. Glisson is the Director of Research, U.S. Poultry and Egg Association, Tucker, Georgia, USA.
L.R. McDougald is Professor in the Department of Poultry Science at the University of Georgia in Athens, Georgia, USA.
L.K. Nolan is Dean at the College of Veterinary Medicine, Iowa State University in Ames, Iowa, USA.
D.L. Suarez is Research Leader of the Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture in Athens, Georgia, USA.
V.L. Nair, is a Professor and Head, Avian Viral Diseases Programme, The Pirbright Institute in Compton, Berkshire, United Kingdom.