“Unlocking The Efficacy of Tetrahydrobiopterin (BH4) Towards Metabolic Profile and Growth Status in Children With Phenylketonuria: A Meta Analysis”. Archives of Pediatric Gastroenterology, Hepatology, and Nutrition, vol. 4, no. 3, Aug. 2025, pp. 111-28, https://doi.org/10.58427/apghn.4.3.2025.111-128.