Hassanzadeh M, Fard MHB, Tooluo A. Evaluation of the Immunogenisity of Immune Complex Infectious Bursal Disease Vaccine Delivered In ovo to Embryonated Eggs or Subcutaneously to Day-Old Chickens. Int. J. Poult. Sci. 2005;5(1):70–74. doi:10.3923/ijps.2006.70.74