Authors: Jonathan Hewitt; Caroline McCormack; Hui Sian Tay; Matthew Greig; Jennifer Law; Adam Tay; Nurwasimah Hj Asnan; Ben Carter; Phyo Kyaw Myint; Lyndsay Pearce; Susan J Moug; Kathryn McCarthy; Michael J Stechman Journal: BMJ Open Date: 2016-03-31 Impact factor: 2.692