1. Department of Pathology at University of Texas Medical Branch, Galveston, TX, USA
2. Center for Biomedical Engineering at University of Texas Medical Branch, Galveston, TX, USA
3. Rocky Mountain Veterinary Branch, Microscopy Unit, Division of Intramural Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
4. Department of Rare and Emerging Viral Infections and Response (EID), Centre for Infectious Disease Control (CIb), National Institute of Public Health and the Environment (RIVM), Bilthoven, The Netherlands