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Vutyavanich T, Piromlertamorn W, Ellis J; Reproductive Medicine Subcommittee; Royal Thai College of Obstetricians and Gynaecologists.Vutyavanich T, et al.J Obstet Gynaecol Res. 2011 Mar;37(3):236-44. doi: 10.1111/j.1447-0756.2010.01384.x. Epub 2011 Jan 27.J Obstet Gynaecol Res. 2011.PMID: 21272157