G6PD and Hyperbilirubinemia: Even though,Glucose-6-phosphate dehydrogenase enzyme deficiency is one of the major cause ofneonatal hyperbilirubinemia, it is not included in this study as a potentialrisk factor because G-6-PD enzyme assay is not done for any of the babies inthis study, as neonatal screening for the enzyme deficiency is not routinelycarried out in our country.