1. Department of Pathology, The University of Hong Kong, Hong Kong, Hong Kong SAR
2. HKU-Pasteur Research Pole, The University of Hong Kong, Hong Kong, Hong Kong SAR
3. School of Public Health, The University of Hong Kong, Hong Kong, Hong Kong SAR
4. Department of Veterinary Public Health and Pharmacology, Faculty of Veterinary Medicine and Animal Science, The University of Peradeniya, Peradeniya, Sri Lanka