title: The negative-pressure respirator: an improved design.
mesh_terms: D001835:Body Weight; D006801:Humans; D007231:Infant, Newborn; D013902:Radiography, Thoracic; D012127:Respiratory Distress Syndrome, Newborn / Q000628:therapy*; D012122:Ventilators, Mechanical / Q000295:instrumentation* / Q000379:methods