Surfactant administration. SeehaseMatthias J. P. CollinsJennifer KuypersElke K. JellemaReint R. M. G. OpheldersDaan L. OspinaOlga Perez-GilJ. BiancoFederico GarziaRaffaella RazzettiRoberta W. KramerBoris 2012 <p>Bw – bodyweight. Data expressed as mean±SEM. * p<0.05, unpaired t-test.</p>