For example, at 37 weeks, 10% of babies delivered by elective Caesarean section developed respiratory problems, compared with 2.8% of infants delivered naturally or by emergency Caesarean section.
Both were pronounced dead at hospital and the baby died a day after being delivered by caesarean section.
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The report showed that a number of patients went on to conceive naturally and have children delivered by caesarean section.
Babies who are delivered through Caesarean section are twice as likely to become obese than those born traditionally, US research suggests.
The twins were delivered by Caesarean section and doctors then started a "race against time" as soon as Isabel's head was free.
The Royal College of Midwives said the figures were disappointing as one in four babies being delivered by Caesarean was "simply too many".
They won't qualify if they have delivered their babies via caesarean-section.
His lawyers told the court that staff failed to monitor his heart for more than 12 hours during labour and should have delivered him by emergency Caesarean because he was starved of oxygen.
Doctors at Bellevue Hospital Center in Manhattan delivered the boy by postmortem caesarean section.
Mr Jones, who had delivered Prime Minister David Cameron's youngest child by caesarean section in 2010, joined the Royal Cornwall Hospital in 1992.
Caesarean sections used to be a last resort for delivering babies who - for whatever reason - could not be delivered naturally.
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