1. Pumactant and poractant alfa for treatment of respiratory distress syndrome in neonates born at 25-29 weeks' gestation: a randomized trial.;Ainsworth;Lancet,2000
2. Clinical trial of Survanta versus Exosurf in Infants <1500g with respiratory distress syndrome.;Alvarado;Pediatric Research,1993
3. Comparative trial of artificial and natural surfactants in the treatment of respiratory distress syndrome of prematurity: experiences in a developing country;daCosta;Pediatric Pulmonology,1999
4. A multicenter randomized trial comparing two surfactants for the treatment of neonatal respiratory distress syndrome;Horbar;Journal of Pediatrics,1993
5. A multicenter randomized masked comparison trial of natural versus synthetic surfactant for the treatment of respiratory distress syndrome;Hudak;Journal of Pediatrics,1996