Editing Caesarean section (section)

====Twins====
For otherwise healthy twin pregnancies where both twins are head down a trial of vaginal delivery is recommended between 37 and 38 weeks.<ref name=NICE2011 /><ref name=Bis2013/> Vaginal delivery in this case does not worsen the outcome for either infant as compared with caesarean section.<ref name="Bis2013"/> There is controversy on the best method of delivery where the first twin is head first and the second is not.<ref name=Bis2013/> When the first twin is not head down at the point of labor starting, a caesarean section should be recommended.<ref name=Bis2013/> Although the second twin typically has a higher frequency of problems, it is unknown if a planned caesarean section affects this.<ref name=NICE2011 /> It is estimated that 75% of twin pregnancies in the United States were delivered by caesarean section in 2008.<ref name="pmid22015878">{{cite journal | vauthors = Lee HC, Gould JB, Boscardin WJ, El-Sayed YY, Blumenfeld YJ | title = Trends in cesarean delivery for twin births in the United States: 1995-2008 | journal = Obstetrics and Gynecology | volume = 118 | issue = 5 | pages = 1095–1101 | date = November 2011 | pmid = 22015878 | pmc = 3202294 | doi = 10.1097/AOG.0b013e3182318651 }}</ref>