1. Shijiazhuang Center for Disease Control and Prevention, 3 Likang Street, Shijiazhuang, Hebei Province, PR China
2. Queensland Public Health Microbiology Laboratory, Forensic and Scientific Services, 39 Kessels Road, Coopers Plains, QLD 4108, Australia
3. EML Consulting Services QLD, 1/148 Tennyson Memorial Avenue, Tennyson, QLD 4105, Australia