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Successful induction of labor: prediction by pre-induction cervical length, angle of progression and cervical elastography.
Pereira S, Frick AP, Poon LC, Zamprakou A, Nicolaides KH.
Ultrasound Obstet Gynecol 2014;44:468-75. pdf -
Second-trimester screening for trisomy-21 using prefrontal space ratio.
Chaveeva P, Agathokleous M, Poon LC, Markova D, Nicolaides KH.
Fetal Diagn Ther 2013;34:50-5. pdf