1 Division of Chemical Pathology, Department of Pathology, Queen Mary Hospital, Hong Kong, China.
2 Metabolic Medicine, Hong Kong Children Hospital, Hong Kong, China.
3 Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Hong Kong, China.
4 Division of Chemical Pathology, Department of Pathology, Queen Mary Hospital, Hong Kong, China; Department of Pathology, The University of Hong Kong, Hong Kong, China. Electronic address: ching-wanlam@pathology.hku.hk.