A citation-based method for searching scientific literature

N J Wald, C Rodeck, A K Hackshaw, J Walters, L Chitty, A M Mackinson. Health Technol Assess 2003
Times Cited: 170







List of co-cited articles
1066 articles co-cited >1



Times Cited
  Times     Co-cited
Similarity


First-trimester or second-trimester screening, or both, for Down's syndrome.
Fergal D Malone, Jacob A Canick, Robert H Ball, David A Nyberg, Christine H Comstock, Radek Bukowski, Richard L Berkowitz, Susan J Gross, Lorraine Dugoff, Sabrina D Craigo,[...]. N Engl J Med 2005
668
44



First-trimester screening for trisomies 21 and 18.
Ronald Wapner, Elizabeth Thom, Joe Leigh Simpson, Eugene Pergament, Richard Silver, Karen Filkins, Lawrence Platt, Maurice Mahoney, Anthony Johnson, W Allen Hogge,[...]. N Engl J Med 2003
348
18

Maternal serum screening for Down's syndrome in early pregnancy.
N J Wald, H S Cuckle, J W Densem, K Nanchahal, P Royston, T Chard, J E Haddow, G J Knight, G E Palomaki, J A Canick. BMJ 1988
755
18



A mixture model of nuchal translucency thickness in screening for chromosomal defects.
D Wright, K O Kagan, F S Molina, A Gazzoni, K H Nicolaides. Ultrasound Obstet Gynecol 2008
155
17


An association between low maternal serum alpha-fetoprotein and fetal chromosomal abnormalities.
I R Merkatz, H M Nitowsky, J N Macri, W E Johnson. Am J Obstet Gynecol 1984
572
16





Maternal age- and gestation-specific risk for trisomy 21.
R J Snijders, K Sundberg, W Holzgreve, G Henry, K H Nicolaides. Ultrasound Obstet Gynecol 1999
229
12


Correct estimation of parameters for ultrasound nuchal translucency screening.
K H Nicolaides, R J Snijders, H S Cuckle. Prenat Diagn 1998
111
11




Low second trimester maternal serum unconjugated oestriol in pregnancies with Down's syndrome.
J A Canick, G J Knight, G E Palomaki, J E Haddow, H S Cuckle, N J Wald. Br J Obstet Gynaecol 1988
222
11

SURUSS in perspective.
N J Wald, C Rodeck, A K Hackshaw, A Rudnicka. BJOG 2004
66
15

Sequential and contingent prenatal screening for Down syndrome.
Nicholas J Wald, Alicja R Rudnicka, Jonathan P Bestwick. Prenat Diagn 2006
43
23

Maternal age and gestational age-specific risk for chromosomal defects.
R J Snijders, N J Sebire, K H Nicolaides. Fetal Diagn Ther 1995
216
9

First- and second-trimester evaluation of risk for Down syndrome.
Robert H Ball, Aaron B Caughey, Fergal D Malone, David A Nyberg, Christine H Comstock, George R Saade, Richard L Berkowitz, Susan J Gross, Lorraine Dugoff, Sabrina D Craigo,[...]. Obstet Gynecol 2007
58
15

Absence of nasal bone in fetuses with trisomy 21 at 11-14 weeks of gestation: an observational study.
S Cicero, P Curcio, A Papageorghiou, J Sonek, K Nicolaides. Lancet 2001
306
9


Dimeric inhibin A as a marker for Down's syndrome in early pregnancy.
D A Aitken, E M Wallace, J A Crossley, I A Swanston, Y van Pareren, M van Maarle, N P Groome, J N Macri, J M Connor. N Engl J Med 1996
130
9

Practical strategies in contingent sequential screening for Down syndrome.
Peter Benn, Dave Wright, Howard Cuckle. Prenat Diagn 2005
49
18

One-stop clinic for assessment of risk for trisomy 21 at 11-14 weeks: a prospective study of 15 030 pregnancies.
R Bindra, V Heath, A Liao, K Spencer, K H Nicolaides. Ultrasound Obstet Gynecol 2002
168
9


Presence of fetal DNA in maternal plasma and serum.
Y M Lo, N Corbetta, P F Chamberlain, V Rai, I L Sargent, C W Redman, J S Wainscoat. Lancet 1997
9

Prenatal screening for Down's syndrome using inhibin-A as a serum marker.
N J Wald, J W Densem, L George, S Muttukrishna, P G Knight. Prenat Diagn 1996
181
9

DNA sequencing of maternal plasma to detect Down syndrome: an international clinical validation study.
Glenn E Palomaki, Edward M Kloza, Geralyn M Lambert-Messerlian, James E Haddow, Louis M Neveux, Mathias Ehrich, Dirk van den Boom, Allan T Bombard, Cosmin Deciu, Wayne W Grody,[...]. Genet Med 2011
572
9


First-trimester sonographic screening for Down syndrome.
Fergal D Malone, Mary E D'Alton. Obstet Gynecol 2003
82
9





Second-trimester ultrasound to detect fetuses with Down syndrome: a meta-analysis.
R Smith-Bindman, W Hosmer, V A Feldstein, J J Deeks, J D Goldberg. JAMA 2001
188
8

Contingent screening for Down syndrome is an efficient alternative to non-disclosure sequential screening.
Dave Wright, Ian Bradbury, Peter Benn, Howard Cuckle, Karen Ritchie. Prenat Diagn 2004
81
9

Integrated serum screening for Down syndrome in primary obstetric practice.
George J Knight, Glenn E Palomaki, Louis M Neveux, Dwight E Smith, Edward M Kloza, Andrea J Pulkkinen, Josephine Williams, James E Haddow. Prenat Diagn 2005
26
30

Fetal nasal bone in screening for trisomies 21, 18 and 13 and Turner syndrome at 11-13 weeks of gestation.
K O Kagan, S Cicero, I Staboulidou, D Wright, K H Nicolaides. Ultrasound Obstet Gynecol 2009
78
10

Temporal changes in maternal serum biochemical markers of trisomy 21 across the first and second trimester of pregnancy.
K Spencer, J A Crossley, D A Aitken, A B J Nix, F D J Dunstan, K Williams. Ann Clin Biochem 2002
66
12

Maternal serum Down syndrome screening: free beta-protein is a more effective marker than human chorionic gonadotropin.
J N Macri, R V Kasturi, D A Krantz, E J Cook, N D Moore, J A Young, K Romero, J W Larsen. Am J Obstet Gynecol 1990
184
8

Prenatal screening for Down's syndrome with use of maternal serum markers.
J E Haddow, G E Palomaki, G J Knight, J Williams, A Pulkkinen, J A Canick, D N Saller, G B Bowers. N Engl J Med 1992
395
8

First-trimester combined screening for trisomy 21 at 7-14 weeks' gestation.
D Wright, K Spencer, K Kagan K, N Tørring, O B Petersen, A Christou, J Kallikas, K H Nicolaides. Ultrasound Obstet Gynecol 2010
81
9

Tricuspid regurgitation in screening for trisomies 21, 18 and 13 and Turner syndrome at 11+0 to 13+6 weeks of gestation.
K O Kagan, C Valencia, P Livanos, D Wright, K H Nicolaides. Ultrasound Obstet Gynecol 2009
89
8



Co-cited is the co-citation frequency, indicating how many articles cite the article together with the query article. Similarity is the co-citation as percentage of the times cited of the query article or the article in the search results, whichever is the lowest. These numbers are calculated for the last 100 citations when articles are cited more than 100 times.