?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Maag+Eigaard&rft.aufirst=N.&rft.au=Maag+Eigaard%2C+N.&rft.date=2003&rft.title=Mortality+in+organic+free-range+chickens+and+molecular+characterization+of+the+involved+pathogens&rft.genre=proceeding