2. American College of Obstetricians and Gynecologists. ACOG Practice Bulletin No. 183:Postpartum
emorrhage[J]. Obstet Gynecol,2017,130(4):e168-e186.
3. Sentilhes L,Vayssiere C,Deneux-Tharaux C,et al.Postpartum hemorrhage:guidelines for clinical practice from the French College of Gynaecologists and Obstetricians(CNGOF):in collaboration with the French Society of Anesthesiology and Intensive Care(SFAR)[J].Eur J Obstet Gynecol Reprod Biol,2016,198:12-21.