Yudiyanto, A. R. “Effectiveness of Omeprazole Compared to Placebo for Recurrent Abdominal Pain in Adolescents: A Randomized Controlled Clinical Trial ”. Journal La Medihealtico, Vol. 6, no. 4, Sept. 2025, pp. 1054-62, https://newinera.com/index.php/JournalLaMedihealtico/article/view/5742.