- Keller, Roberta;
- Black, Dennis;
- Ballard, Philip;
- Ballard, Roberta;
- Keller, RL;
- Merrill, JD;
- Black, DM;
- Steinhorn, RH;
- Eichenwald, EC;
- Durand, DJ;
- Ryan, RM;
- Truog, WE;
- Courtney, SE;
- Ballard, PL
Background: Surfactant dysfunction may contribute to the development of bronchopulmonary dysplasia (BPD) in persistently ventilated preterm infants. We conducted a multicenter randomized, blinded, pilot study to assess the safety and efficacy of late admin