Morley, C. J.; Davis, P. G.; Doyle, L. W.; Brion, L. P.; Hascoet, J. M.; Carlin, J. B.; Coin Trial, I. Nasal CPAP or Intubation at Birth for Very Preterm Infants. New England Journal of Medicine. 2008, 358 (7): 700–708. PMID 18272893. doi:10.1056/NEJMoa072788.
Morley, C. J.; Davis, P. G.; Doyle, L. W.; Brion, L. P.; Hascoet, J. M.; Carlin, J. B.; Coin Trial, I. Nasal CPAP or Intubation at Birth for Very Preterm Infants. New England Journal of Medicine. 2008, 358 (7): 700–708. PMID 18272893. doi:10.1056/NEJMoa072788.