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    K. Spencer, N. J. Cowans, I. Chefetz, J. Tal, H. Meiri, First-trimester maternal serum PP-13, PAPP-A and second-trimester uterine artery Doppler pulsatility index as markers of pre-eclampsia, Ultrasound in Obstetrics & Gynecology, 2007, 29, 2
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    AM Jaques, JL Halliday, I Francis, L Bonacquisto, R Forbes, A Cronin, LJ Sheffield, Follow up and evaluation of the Victorian first-trimester combined screening programme for Down syndrome and trisomy 18, BJOG: An International Journal of Obstetrics & Gynaecology, 2007, 114, 7
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    Kevin Spencer, Nicholas J. Cowans, Anastasia Stamatopoulou, Maternal serum ADAM12s as a marker of rare aneuploidies in the first or second trimester of pregnancy, Prenatal Diagnosis, 2007, 27, 13
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    Mohammed-Salleh M. Ardawi, Hasan A. Nasrat, Abdulrahim A. Rouzi, Mohammed H. Qari, Mohammed H. Al-Qahtani, Adel M. Abuzenadah, Maternal serum free-β-chorionic gonadotrophin, pregnancy-associated plasma protein-A and fetal nuchal translucency thickness at 10–13+6 weeks in relation to co-variables in pregnant Saudi women, Prenatal Diagnosis, 2007, 27, 4
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    Yu Zhang, Chen-ming Xu, Yi-min Zhu, Min-yue Dong, Yu-li Qian, Fan Jin, He-feng Huang, Preimplantation genetic diagnosis for Down syndrome pregnancy, Journal of Zhejiang University SCIENCE B, 2007, 8, 7, 515

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    Moniek Twisk, Maaike L. Haadsma, Fulco van der Veen, Sjoerd Repping, Sebastiaan Mastenbroek, Maas-Jan Heineman, Patrick M.M. Bossuyt, Johanna C. Korevaar, Preimplantation genetic screening as an alternative to prenatal testing for Down syndrome: preferences of women undergoing in vitro fertilization/intracytoplasmic sperm injection treatment, Fertility and Sterility, 2007, 88, 4, 804

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    Peter A. Benn, Winston A. Campbell, Carolyn M. Zelop, Charles Ingardia, James F.X. Egan, Stepwise sequential screening for fetal aneuploidy, American Journal of Obstetrics and Gynecology, 2007, 197, 3, 312.e1

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    Jennie Laigaard, Kevin Spencer, Michael Christiansen, Nicholas J. Cowans, Severin Olesen Larsen, Bent Norgaard Pedersen, Ulla M. Wewer, ADAM 12 as a first-trimester maternal serum marker in screening for Down syndrome, Prenatal Diagnosis, 2006, 26, 10
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    Tou Choong CHANG, Antenatal screening for Down syndrome in New Zealand: Time for a national screening policy?, Australian and New Zealand Journal of Obstetrics and Gynaecology, 2006, 46, 2
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    Peter N.A.C.M. Van Heesch, Peter C.J.I. Schielen, Mark F. Wildhagen, Karin den Hollander, Eric A.P. Steegers, Hajo I.J. Wildschut, Combined first trimester screening for trisomy 21: lack of agreement between risk calculation methods, Journal of Perinatal Medicine, 2006, 34, 2

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    Alin Basgul Yigiter, Zehra Nese Kavak, Nadi Bakirci, Husnu Gokaslan, Effect of smoking on pregnancy-associated plasma protein A, free β-human chorionic gonadotropin, and nuchal translucency in the first trimester of pregnancy, Advances in Therapy, 2006, 23, 1, 131

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    K. Spencer, N. J. Cowans, K. Avgidou, K. H. Nicolaides, First-trimester ultrasound and biochemical markers of aneuploidy and the prediction of impending fetal death, Ultrasound in Obstetrics & Gynecology, 2006, 28, 5
  112. 112
    Tak Yeung Leung, Kevin Spencer, Tse Ngong Leung, Tak Yuen Fung, Tze Kin Lau, Higher Median Levels of Free β-hCG and PAPP-A in the First Trimester of Pregnancy in a Chinese Ethnic Group, Fetal Diagnosis and Therapy, 2006, 21, 1, 140

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    P. C. J. I. Schielen, M. van Leeuwen-Spruijt, I. Belmouden, L. H. Elvers, M. Jonker, J. G. Loeber, Multi-centre first-trimester screening for Down syndrome in the Netherlands in routine clinical practice, Prenatal Diagnosis, 2006, 26, 8
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    A Rissanen, M Niemimaa, M Suonpää, M Ryynänen, S Heinonen, Pregnancy-associated plasma protein A, free human chorionic gonadotrophin and nuchal translucency as predictors of miscarriage, Clinical Genetics, 2006, 69, 3
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    Ishraq Dhaifalah, Jiri Santavy, Jana Zapletalova, Screening for chromosomal anomalies in the first trimester: a report on the first year of prospective screening for chromosomal anomalies in the first trimester in the czech republic, Biomedical Papers, 2006, 150, 2, 275

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    O. Falcon, M. Auer, A. Gerovassili, K. Spencer, K. H. Nicolaides, Screening for trisomy 21 by fetal tricuspid regurgitation, nuchal translucency and maternal serum free β-hCG and PAPP-A at 11 + 0 to 13 + 6 weeks, Ultrasound in Obstetrics & Gynecology, 2006, 27, 2
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    Hélène Marical, Nathalie Douet-Guilbert, Karine Bages, Michel Collet, Marie-Josée Le Bris, Frédéric Morel, Marc De Braekeleer, Second-trimester prenatal screening for trisomy 21 using biochemical markers: a 7-year experience in one cytogenetic laboratory, Prenatal Diagnosis, 2006, 26, 4
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    Kevin Spencer, Prenatal Medicine, 2006,

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    Matthijs van den Berg, Danielle R. M. Timmermans, Johanna H. Kleinveld, Elisa Garcia, John M. G. van Vugt, Gerrit van der Wal, Accepting or declining the offer of prenatal screening for congenital defects: test uptake and women's reasons, Prenatal Diagnosis, 2005, 25, 1
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    Narelle C. Hadlow, Beverley G. Hewitt, Jan E. Dickinson, Peter Jacoby, Carol Bower, Community-based screening for Down's Syndrome in the first trimester using ultrasound and maternal serum biochemistry, BJOG: An International Journal of Obstetrics & Gynaecology, 2005, 112, 11
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    A. Borrell, E. Casals, A. Fortuny, A. Goncé, I. Mercadé, A. Serés, C. González, V. Cararach, J.A. Vanrell, Cribado de trisomía 21 en el primer trimestre mediante test combinado de bioquímica y ecografía. Estudio prospectivo de intervención, Progresos de Obstetricia y Ginecología, 2005, 48, 5, 223

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    K. Spencer, V. Heath, A. El-Sheikhah, C. Y. T. Ong, K. H. Nicolaides, Ethnicity and the need for correction of biochemical and ultrasound markers of chromosomal anomalies in the first trimester: a study of Oriental, Asian and Afro-Caribbean populations, Prenatal Diagnosis, 2005, 25, 5
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    Kypros H. Nicolaides, Frank A. Chervenak, Laurence B. McCullough, Kyriaki Avgidou, Aris Papageorghiou, Evidence-based obstetric ethics and informed decision-making by pregnant women about invasive diagnosis after first-trimester assessment of risk for trisomy 21, American Journal of Obstetrics and Gynecology, 2005, 193, 2, 322

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    Ronald J. Wapner, First Trimester Screening: The BUN Study, Seminars in Perinatology, 2005, 29, 4, 236

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    Joseph R Biggio, First trimester ultrasound screening for fetal aneuploidy and middle cerebral artery Doppler assessment for fetal alloimmunization, Current Opinion in Pediatrics, 2005, 17, 6, 713

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    Anna Goncé, Antoni Borrell, Albert Fortuny, Elena Casals, M. Angels Martínez, Imma Mercadé, Vicenç Cararach, Joan Antoni Vanrell, First-trimester screening for trisomy 21 in twin pregnancy: does the addition of biochemistry make an improvement?, Prenatal Diagnosis, 2005, 25, 12
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    Athena P. Souka, Constantin S. von Kaisenberg, Jonathan A. Hyett, Jiri D. Sonek, Kypros H. Nicolaides, Increased nuchal translucency with normal karyotype, American Journal of Obstetrics and Gynecology, 2005, 192, 4, 1005

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    Simona Cicero, Kevin Spencer, Kyriaki Avgidou, Stefano Faiola, Kypros H. Nicolaides, Maternal serum biochemistry at 11–13+6 weeks in relation to the presence or absence of the fetal nasal bone on ultrasonography in chromosomally abnormal fetuses: an updated analysis of integrated ultrasound and biochemical screening, Prenatal Diagnosis, 2005, 25, 11
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    Pui Wah Hui, Yung Hang Lam, Mary Hoi Yin Tang, Ernest Hung Yu NG, William Shu Biu Yeung, Pak Chung Ho, Maternal serum pregnancy-associated plasma protein-A and free β-human chorionic gonadotrophin in pregnancies conceived with fresh and frozen-thawed embryos from in vitro fertilization and intracytoplasmic sperm injection, Prenatal Diagnosis, 2005, 25, 5
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    David A. Krantz, Terrence W. Hallahan, V. James Macri, James N. Macri, Maternal weight and ethnic adjustment within a first-trimester Down syndrome and trisomy 18 screening program, Prenatal Diagnosis, 2005, 25, 8
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    K. H. Nicolaides, K. Spencer, K. Avgidou, S. Faiola, O. Falcon, Multicenter study of first-trimester screening for trisomy 21 in 75 821 pregnancies: results and estimation of the potential impact of individual risk-orientated two-stage first-trimester screening, Ultrasound in Obstetrics & Gynecology, 2005, 25, 3
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    Wilfried J. A. Gyselaers, Annie J. Vereecken, Erik J. H. Van Herck, Dany P. L. Straetmans, Eric T. M. de Jonge, Willem U. A. M. Ombelet, Jan G. Nijhuis, Population screening for fetal trisomy 21: easy access to screening should be balanced against a uniform ultrasound protocol, Prenatal Diagnosis, 2005, 25, 11
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    Sarah T. South, Virginia L. Corson, Joseph L. McMichael, Karin J. Blakemore, Gail Stetten, Prenatal Detection of an Interstitial Deletion in 4p15 in a Fetus with an Increased Nuchal Skin Fold Measurement, Fetal Diagnosis and Therapy, 2005, 20, 1, 58

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    Allan Caine, A Edna Maltby, C Anthony Parkin, Jonathan J Waters, John A Crolla, Prenatal detection of Down's syndrome by rapid aneuploidy testing for chromosomes 13, 18, and 21 by FISH or PCR without a full karyotype: a cytogenetic risk assessment, The Lancet, 2005, 366, 9480, 123

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    Kyriaki Avgidou, Aris Papageorghiou, Renu Bindra, Kevin Spencer, Kypros H. Nicolaides, Prospective first-trimester screening for trisomy 21 in 30,564 pregnancies, American Journal of Obstetrics and Gynecology, 2005, 192, 6, 1761

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    Elisabeth Krampl, Screening auf Chromosomenanomalien im ersten Trimenon, Gyn�kologisch-geburtshilfliche Rundschau, 2005, 45, 2, 86

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    Aleksandra Novakov-Mikic, Screening of chromosomal abnormalities: The focus is on the first trimester, Medicinski pregled, 2005, 58, 1-2, 5

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    K. Spencer, J. A. Crossley, D. A. Aitken, K. H. Nicolaides, Second-trimester levels of pregnancy-associated plasma protein-A and free β-hCG in pregnancies with trisomy 13, Prenatal Diagnosis, 2005, 25, 5
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    N.J. Wald, C. Rodeck, A.K. Hackshaw, A. Rudnicka, SURUSS in Perspective‡, Seminars in Perinatology, 2005, 29, 4, 225

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    Ryan J. HODGES, Euan M. WALLACE, Testing for Down syndrome in the older woman: a risky business?, Australian and New Zealand Journal of Obstetrics and Gynaecology, 2005, 45, 6
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    Kevin Spencer, Simona Cicero, Alessia Atzei, Chineze Otigbah, Kypros H. Nicolaides, The influence of maternal insulin-dependent diabetes on fetal nuchal translucency thickness and first-trimester maternal serum biochemical markers of aneuploidy, Prenatal Diagnosis, 2005, 25, 10
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    Karen Filkins, Brian J Koos, Ultrasound and fetal diagnosis, Current Opinion in Obstetrics and Gynecology, 2005, 17, 2, 185

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    O. Langer, Ultrasound biometry evolves in the management of diabetes in pregnancy, Ultrasound in Obstetrics & Gynecology, 2005, 26, 6
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    Maj Hultén, Combined serum and nuchal translucency screening in the first trimester achieves 85% to 90% detection rate for Down and Edward syndromes, Evidence-based Healthcare, 2004, 8, 2, 82

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    Dave Wright, Ian Bradbury, Peter Benn, Howard Cuckle, Karen Ritchie, Contingent screening for Down syndrome is an efficient alternative to non-disclosure sequential screening, Prenatal Diagnosis, 2004, 24, 10
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    C. Bach, S. Torrent, D. Cabrero, J. Sabrià, Cribado bioquímico-ecográfico de las aneuploidías en el primer trimestre. Metodología y resultados, Progresos de Obstetricia y Ginecología, 2004, 47, 1, 5

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    K. Spencer, D. Aitken, Factors affecting women's preference for type of prenatal screening test for chromosomal anomalies, Ultrasound in Obstetrics & Gynecology, 2004, 24, 7
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    Ray O Bahado-Singh, Chen S Chee Cheng, First trimester prenatal diagnosis, Current Opinion in Obstetrics and Gynecology, 2004, 16, 2, 177

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    E. J. Stenhouse, J. A. Crossley, D. A. Aitken, K. Brogan, A. D. Cameron, J. M. Connor, First-trimester combined ultrasound and biochemical screening for Down syndrome in routine clinical practice, Prenatal Diagnosis, 2004, 24, 10
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    Robert H Ball, Invasive fetal testing, Current Opinion in Obstetrics and Gynecology, 2004, 16, 2, 159

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    Kypros H. Nicolaides, Nuchal translucency and other first-trimester sonographic markers of chromosomal abnormalities, American Journal of Obstetrics and Gynecology, 2004, 191, 1, 45

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    Laura Goetzl, David Krantz, Joe Leigh Simpson, Richard K. Silver, Julia M. Zachary, Eugene Pergament, Lawrence D. Platt, Maurice J. Mahoney, Ronald J. Wapner, Pregnancy-Associated Plasma Protein A, Free β-hCG, Nuchal Translucency, and Risk of Pregnancy Loss, Obstetrics & Gynecology, 2004, 104, 1, 30

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    Ilan E. Timor-Tritsch, Asher Bashiri, Ana Monteagudo, Alan A. Arslan, Qualified and trained sonographers in the US can perform early fetal anatomy scans between 11 and 14 weeks, American Journal of Obstetrics and Gynecology, 2004, 191, 4, 1247

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    J. Garriguet, S. Valverde, C. Chica, J. Espejo, Validez del cribado bioquímico clásico del segundo trimestre en el diagnóstico prenatal, Clínica e Investigación en Ginecología y Obstetricia, 2004, 31, 1, 17

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    Jennifer A. Bubb, Anne L. Matthews, What's new in prenatal screening and diagnosis?, Primary Care: Clinics in Office Practice, 2004, 31, 3, 561

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    Current awareness in prenatal diagnosis, Prenatal Diagnosis, 2003, 23, 7
  157. 157
    K. Spencer, R. Bindra, A. B. J. Nix, V. Heath, K. H. Nicolaides, Delta-NT or NT MoM: which is the most appropriate method for calculating accurate patient-specific risks for trisomy 21 in the first trimester?, Ultrasound in Obstetrics & Gynecology, 2003, 22, 2
  158. 158
    Kevin Spencer, J. B. de Kok, D. W. Swinkels, Increased total cell-free DNA in the serum of pregnant women carrying a fetus affected by trisomy 21, Prenatal Diagnosis, 2003, 23, 7
  159. 159
    M. V. Senat, J. P. Bernard, M. Boulvain, Y. Ville, Intra- and interoperator variability in fetal nasal bone assessment at 11–14 weeks of gestation, Ultrasound in Obstetrics & Gynecology, 2003, 22, 2
  160. 160
    Kevin Spencer, Renu Bindra, Kypros H. Nicolaides, Maternal weight correction of maternal serum PAPP-A and free β-hCG MoM when screening for trisomy 21 in the first trimester of pregnancy, Prenatal Diagnosis, 2003, 23, 10
  161. 161
    Howard Cuckle1, Eugene Pergament, Peter Benn, Maternal Serum Screening for Chromosomal Abnormalities and Neural Tube Defects,
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    Howard S. Cuckle, Peter A. Benn, Multi-Marker Maternal Serum Screening for Chromosomal Abnormalities,