"Non-invasive versus invasive respiratory support in preterm infants at birth: systematic review and meta-analysis"
BMJ Oct 27
http://www.bmj.com/content/347/bmj.f5980
"Conclusion One additional infant could survive to 36 weeks without bronchopulmonary dysplasia for every 25 babies treated with nasal CPAP in the delivery room rather than being intubated."