作者单位:
Univ Nottingham, Nottingham Univ Hosp NHS Trust, Div Obstet & Gynaecol, Nottingham, England
[1]
Stillbirth & Neonatal Death Char, London, England
[2]
Univ Nottingham, Nottingham Univ Hosp NHS Trust, Sch Clin Sci, Div Child Hlth Obstet & Gynaecol
[3]
Univ Nottingham, Nottingham Univ Hosp NHS Trust, Nottingham Clin Trials Unit, Nottingham, England
[4]
Univ Cambridge, Dept Obstet & Gynaecol, Cambridge, England
[5]
发布时间
2017-04-06