The University of Hong Kong - Department of Microbiology, Hong Kong Polytechnic University - Department of Health Technology and Informatics, Pamela Youde Nethersole Eastern Hospital - Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital - Department of Clinical Pathology, Hong Kong Polytechnic University - Department of Health Technology and Informatics, Hong Kong Polytechnic University - Department of Health Technology and Informatics, The University of Hong Kong - Department of Microbiology, Hong Kong Polytechnic University - Department of Health Technology and Informatics, United Christian Hospital - Department of Pathology, Princess Margaret Hospital - Department of Pathology, Tuen Mun Hospital - Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital - Department of Medicine, Ruttonjee Hospital - Department of Medicine & Geriatrics, United Christian Hospital - Department of Medicine & Geriatrics, Princess Margaret Hospital - Department of Medicine, Princess Margaret Hospital - Department of Medicine, Tuen Mun Hospital - Department of Medicine and Geriatric, Tuen Mun Hospital - Department of Medicine and Geriatric, United Christian Hospital - Department of Pathology, United Christian Hospital - Department of Pathology, Princess Margaret Hospital - Department of Pathology, Tuen Mun Hospital - Department of Clinical Pathology, Hong Kong Polytechnic University - Faculty of Health and Social Sciences, Hong Kong Polytechnic University - Department of Health Technology and Informatics, The University of Hong Kong - Department of Microbiology and Hong Kong Polytechnic University - Department of Health Technology and Informatics