[Tabor, A., Vestergaard CH., Lidegaard O. Fetal loss rate after chorionic villus sampling and amniocentesis: an 11 year national registry study. Ultrasound obstet gynecol 2009, 34: 12-13.10.1002/uog.6424]Search in Google Scholar
[Lo YMD., Zhang J., Leung TN., Lau TK., Chang AMZ., Hjelm NM. Rapid clearance of fetal DNA from maternal plasma. Am J Hum Genet 1999, 64: 218-224.10.1086/302205]Search in Google Scholar
[Lo Y.M., Corbetta N., Chamberlain P.F. et al.: Presence of fetal DNA in maternal plasma and serum. Lancet 1997; 350: 485-487.10.1016/S0140-6736(97)02174-0]Search in Google Scholar
[Avent ND., Chitty LS. Non - invasive diagnosis of fetal sex, utilisation of free fetal DNA in maternal plasma and ultrasound. Prenat Diagn 2006, 26: 598-603.10.1002/pd.149316856214]Search in Google Scholar
[Lo Y.M., Tein M.S., Lau T.K., et al. Quantitative analysis of fetal DNA in maternal plasma and serum: implications for noninvasive prenatal diagnosis. Am. J. Hum. Genet. 1998; 62: 768-775.]Search in Google Scholar
[Finnig K.M., Chitty L.S.: Non-invasive fetal sex determination: Impact on clinical practice. Seminars Fetal Noenatal Med 2008; 13: 69-75.10.1016/j.siny.2007.12.00718243829]Search in Google Scholar
[Lau T.W., Leung T.N., Chan L.Y., et al. Fetal clearance from maternal plasma is impaired in preeclampsia. Clin. Chem. 2002; 48: 2141-2146.]Search in Google Scholar
[Hromadnikova I., Holubova B., Hridelova D. et al. Replicate real - time PCR testing of DNA in maternal plasma increases the sensitivity of non - invasive fetal sex determination. Prenat diagn 2003, 23: 235-23810.1002/pd.55612627426]Search in Google Scholar
[Page-Christiaens GC, Bossers B, van der Schoot CE, de Haas M. Use of bi-allelic insertion/deletion polymorphisms as a positive control for fetal genotyping in maternal blood: first clinical experience. Ann N Y Acad Sci 2006. 1075: 123-129.10.1196/annals.1368.01617108201]Search in Google Scholar
[Hill M, Finning K, Mrtin P, Hogg J, Meaney C, Norbury G, Daniels G, Chitty LS. Non-invasive prenatal determination of fetal sex: translating research into clinical practice. Clin Genet 2010: 1-8.10.1111/j.1399-0004.2010.01533.x20840219]Search in Google Scholar
[Chan K.C., Ding C., Gerovasilli A, Yeung S.W., Chiu R., W.K., Leung T.N., Lau T.K., Chim S.S., Chung G.T., Nicolaides K.H., Lo Y.M.D. 2006. Hypermethylated RASSF1A in maternal plasma: a universal fetal DNA marker that improves the reliability of noninvasive prenatal diagnosis. Clin Chem. 52: 2211-221810.1373/clinchem.2006.07499717068167]Search in Google Scholar
[Chim S.S., Tong Y.K., Chiu R.W., Lau T.K., Leung T.N., Chan L.Y., Oudejans C.B., Ding C., Lo Y.M.D. 2005 Detection of the placental epigenetic signature of the maspin gene in maternal plasma. Proc. Natl. Acad. Sci. USA. 102(41): 14753-1475810.1073/pnas.0503335102125354716203989]Search in Google Scholar