Prince of Wales Hospital - The Chinese University of Hong Kong, The Chinese University of Hong Kong - Department of Medicine & Therapeutics, The University of Hong Kong, The University of Hong Kong - HKU-Pasteur Research Pole, The University of Hong Kong, The University of Hong Kong, The University of Hong Kong, Prince of Wales Hospital - The Chinese University of Hong Kong, The University of Hong Kong - WHO Collaborating Centre for Infectious Disease Epidemiology and Control, The University of Hong Kong - Environmental Microbiome Engineering and Biotechnology Lab, The University of Hong Kong, The University of Hong Kong and The Chinese University of Hong Kong - Department of Medicine & Therapeutics

Microbiota I-Center (MagIC), The University of Hong Kong - HKU-Pasteur Research Pole, The University of Hong Kong - HKU-Pasteur Research Pole, The Chinese University of Hong Kong (CUHK) - The Jockey Club School of Public Health and Primary Care, Microbiota I-Center (MagIC), The Chinese University of Hong Kong (CUHK) - The Jockey Club School of Public Health and Primary Care, The University of Hong Kong - HKU-Pasteur Research Pole, University of Alberta - Department of Pediatrics, University of Alberta - Department of Pediatrics, University of Alberta - Department of Pediatrics, The Chinese University of Hong Kong - Department of Medicine & Therapeutics, The Chinese University of Hong Kong - Department of Medicine & Therapeutics and The Chinese University of Hong Kong - Department of Medicine & Therapeutics