Alatas, F., and C. Nisa. “Gastrointestinal Tract Bleeding in Children With Chronic Cholestasis: Prevalence and Risk Factors in a Tertiary Referral Hospital in Indonesia”. Paediatrica Indonesiana, Vol. 63, no. 5, Oct. 2023, https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/3540.