Wang C C, Fung K P, Fok T F, Lau T K, Pang C P, Chu K O, Shum A S W, Lam C W K, Chan M H M, Ho C S, Lau C M, Ting T L, Mak T C W
Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong.
Hong Kong Med J. 2013 Dec;19 Suppl 8:20-2.