title: Nitric oxide: how varied standards of ventilation affect study outcome.
mesh_terms: D000280:Administration, Inhalation; D001993:Bronchodilator Agents / Q000008:administration & dosage*; D015986:Confounding Factors, Epidemiologic; D006801:Humans; D009569:Nitric Oxide / Q000008:administration & dosage*; D012107:Research Design; D012121:Respiration, Artificial / Q000379:methods*; D012128:Respiratory Distress Syndrome / Q000188:drug therapy*