Shah SI, Aboudi D, La Gamma EF, Brumberg HL. Respiratory Severity Score Greater than or Equal to 2 at Birth is Associated with Increased Risk of Mortality in Infants with Birthweights Less Than or Equal to 1,250 grams [published online ahead of print, 2020 Sep 11]. Pediatr Pulmonol. 2020;10.1002/ppul.25069. doi:10.1002/ppul.25069