title: Were infants in the control group sicker?
mesh_terms: D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007385:Intermittent Positive-Pressure Ventilation; D011175:Positive-Pressure Respiration; D012127:Respiratory Distress Syndrome, Newborn / Q000401:mortality / Q000628:therapy*