Media type: E-Article Title: A Longitudinal Study on Avian Polyomavirus-specific Antibodies in Captive Spix's Macaws (Cyanopsitta spixii) Contributor: Deb, Amrita; Foldenauer, Ulrike; Borjal, Raffy Jim; Streich, W. Jürgen; Lüken, Caroline; Johne, Reimar; Müller, Hermann; Hammer, Sven imprint: Association of Avian Veterinarians (AAV), 2010 Published in: Journal of Avian Medicine and Surgery Language: English DOI: 10.1647/2009-004.1 ISSN: 1082-6742 Keywords: General Medicine ; Small Animals Origination: Footnote: