An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Leung WC, Choi H, Lau WL, Ng LK, Lau ET, Lo FM, Choy KW, Lau TK, Tang MH, Chin R.Leung WC, et al.Fetal Diagn Ther. 2009;25(4):397-9. doi: 10.1159/000236153. Epub 2009 Sep 30.Fetal Diagn Ther. 2009.PMID: 19786786
Wong AY, Tang LC, Chin RK.Wong AY, et al. Among authors: chin rk.Aust N Z J Obstet Gynaecol. 2010 Jun;50(3):273-9. doi: 10.1111/j.1479-828X.2010.01152.x.Aust N Z J Obstet Gynaecol. 2010.PMID: 20618247Clinical Trial.