Shaun Khanna a,b MBBS, Cindy Lia MBBS, Anjalee T. Amarasekera a,bBPharm, PhD, Aditya Bhat a, b, c MBBS, FRACP, Henry H.L. Chen a, d MBBS, FRACP, Gary C.H. Gana, b, c MBBS, FRACP, PhD, Timothy C. Tana, b, c, d MBBS, FRACP, PhD