1. Nausea and vomiting in pregnancy;Fairweather;Am J Obstet Gynecol,1966
2. Hyperemesis gravidarum in Chinese women;Chin;Asia-Oceania J Obstet Gynecol,1987
3. Nausea and vomiting in pregnancy—A contribution to its epidemiology;Jarnfelt-Samsioe;Gynecol Obstet Invest,1983
4. Epidemiology of vomiting in early pregnancy;Klebanoff;Obstet Gynecol,1985
5. Rogers MS, Wong FWS, Chang AMZ. Determinants of birthweight in the New Territories of Hong Kong. Aust NZ J Obstet Gynecol (in press).