1. Vitalant Research Institute, San Francisco, California.
2. Department of Laboratory Medicine, University of California, San Francisco, California.
3. Institute for Conservation Research, San Diego Zoo Global, San Diego, California.
4. Regional Laboratory of Virology, National Reference Laboratory of Gastroenteric Viruses, ÁNTSZ Regional Institute of State Public Health Service, Pécs, Hungary.
5. Department of Medical Microbiology and Immunology, Medical School, University of Pécs, Pécs, Hungary.
6. Department of Virology, University of Helsinki, Helsinki, Finland.
7. IDEXX BioAnalytics, Columbia, Missouri.