[1] Natl Univ Ireland, Univ Hosp Galway, Dept Obstet & Gynecol, Galway, Ireland
[2] Univ Toronto, Sinai Hlth, Maternal Fetal Med, Toronto, ON, Canada
[3] Univ Toronto, Womens Coll Hosp, Toronto, ON, Canada
[4] Columbia Univ, Dept Obstet & Gynecol, Irving Med Ctr, New York, NY USA
[5] UCL, Inst Womens Hlth, London, England
[6] Rotunda Hosp, RCSI Dept Reprod Med, Dublin, Ireland
[7] Malhotra Nursing & Matern Home, Agra, Uttar Pradesh, India
[8] Rainbow Hosp, Agra, India
[9] Univ Coll Dublin, Natl Matern Hosp, UCD Perinatal Res Ctr, Sch Med, Dublin, Ireland