Is there a nuchal translucency millimeter measurement above which there is no added benefit from first trimester serum screening?

Christine H. Comstock, Fergal D. Malone, Robert H. Ball, David A. Nyberg, George R. Saade, Richard L. Berkowitz, Jose Ferreira, Lorraine Dugoff, Sabrina D. Craigo, Ilan E. Timor-Tritsch, Stephen R. Carr, Honor M. Wolfe, Diana W. Bianchi, Mary E. D'Alton