Authors: Francis K L Chan; Jessica Y L Ching; Yee Kit Tse; Kelvin Lam; Grace L H Wong; Siew C Ng; Vivian Lee; Kim W L Au; Pui Kuan Cheong; Bing Y Suen; Heyson Chan; Ka Man Kee; Angeline Lo; Vincent W S Wong; Justin C Y Wu; Moe H Kyaw Journal: Lancet Date: 2017-04-11 Impact factor: 79.321