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Khalil A, Arnaoutoglou C, Pacilli M, Szabo A, David AL, Pandya P.Khalil A, et al.Ultrasound Obstet Gynecol. 2012 Apr;39(4):401-6. doi: 10.1002/uog.10048.Ultrasound Obstet Gynecol. 2012.PMID: 21793081Free article.
Khalil A, Akolekar R, Syngelaki A, Elkhouli M, Nicolaides KH.Khalil A, et al.Ultrasound Obstet Gynecol. 2012 Jul;40(1):28-34. doi: 10.1002/uog.11183. Epub 2012 Jun 18.Ultrasound Obstet Gynecol. 2012.PMID: 22565361Free article.
Khalil A, Coates A, Papageorghiou A, Bhide A, Thilaganathan B.Khalil A, et al.Ultrasound Obstet Gynecol. 2013 Oct;42(4):409-15. doi: 10.1002/uog.12420. Epub 2013 Aug 22.Ultrasound Obstet Gynecol. 2013.PMID: 23362051Free article.