Hyperbilirubinemia in Full-term Neonates

To evaluate the efficacy and safety of sunbathing and Bifidobacterium alone or in combination for full-term neonates with hyperbilirubinemia. The investigators hypothesize that the combination therapy of sunbathing plus Bifidobacterium is safe and effective for prevention and management of hyperbilirubinemia in full-term neonates. The investigators therefore design this prospective, randomized, controlled study to assess the preventive effects of sunbathing combined with Bifidobacterium supplementation on hyperbilirubinemia in full-term neonates. These observations may provide scientific evidence for the use of sunbathing and Bifidobacterium supplementation in the management of hyperbilirubinemia in full-term neonates.