[1] UCL, EGA Inst Womens Hlth, London, England
[2] Wits SAMRC Antiviral Gene Therapy Res Unit, Fac Hlth Sci, Johannesburg, South Africa
[3] Childrens Hosp Philadelphia, Ctr Fetal Res, Div Gen Thorac & Fetal Surg, Philadelphia, PA USA
[4] UCL, UCL Sch Pharm, London, England
[5] UCL, GOS Inst Child Hlth, Zayed Ctr Res Rare Dis Children, Dev Neurosci, London, England
[6] Great Ormond St Hosp Sick Children, Dept Neurol, London, England
[7] UCL, Great Ormond St Inst Child Hlth, London, England
[8] Great Ormond St Hosp Children NHS Fdn Trust, London, England
[9] Great Ormond St Biomed Res Ctr, Natl Inst Hlth Res, London, England
[10] KK Womens & Childrens Hosp, Dept Reprod Med, Singapore, Singapore
[11] Duke NUS Med Sch, Acad Clin Program Obstet & Gynaecol, Singapore, Singapore
[12] Natl Univ Singapore, Yong Loo Lin Sch Med, Expt Fetal Med, Singapore, Singapore