Reference

N. Nowotny, Armin Deutz, Karin Fuchs, W. Schuller, F. Hinterdorfer, H. Auer, Horst Aspöck (1997): Prevalence of swine influenza and other viral, bacterial, and parasitic zoonoses in veterinarians – J. Inf. Dis. – 176: 1414 - 1415.