Institution: | 1.Department of Cardiac, Thoracic and Vascular Surgery, National University Heart Centre Singapore, National University Health System, Singapore, NUHS Tower Block, Level 9, 1E Kent Ridge Road, Singapore, 119228, Singapore ;2.Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore ;3.Medicine Biostatistics Unit, National University of Singapore, Singapore, Singapore ; |