• Cross-trimester repeated measures testing for Down's syndrome screening: an assessment.

      Wright, D; Bradbury, I; Malone, F; D'Alton, M; Summers, A; Huang, T; Ball, S; Baker, A; Nix, B; Aitken, D; et al. (2010-07)
      To provide estimates and confidence intervals for the performance (detection and false-positive rates) of screening for Down's syndrome using repeated measures of biochemical markers from first and second trimester maternal serum samples taken from the same woman.