Minimally Invasive Surfactant Therapy vs Sham Treatment and Death or Bronchopulmonary Dysplasia in Preterm Infants With Respiratory Distress Syndrome

To the Editor We have several concerns about the sham intervention and the control of factors related to bronchopulmonary dysplasia in the recent study1 of minimally invasive surfactant therapy vs sham treatment in preterm infants with respiratory distress syndrome.