#$%^&*AU2019203790A120190620.pdf#####1000670118 ABSTRACT Disclosed are methods of treatment that permit a reduction of risk of mortality in infants who are candidates for treatment with inhaled nitric oxide, by identifying a subset of such infants who are at an increased risk of mortality upon treatment with inhaled nitric oxide also disclosed are related systems for use in administering inhaled nitric oxide and methods of distributing a pharmaceutical product.