?url_ver=Z39.88-2004&rft_id=10.36380%2Fjwpr.2020.63&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Abou+El-Fetouh%2C+M.+S.&rft.aufirst=M.+S.&rft.aulast=Abou+El-Fetouh&rft.issue=4&rft.volume=10&rft.issn=2322455X+(ISSN)&rft.pages=556-564&rft.date=25+December+2020&rft.title=Journal+of+World's+Poultry+Research&rft.atitle=Immune-Complex+Infectious+Bursal+Disease+Virus+versus+Live+Attenuated+Vaccines+to+Protect+SPF+Chicken+against+Very+Virulent+Virus+Challenge&rft.genre=article