Adel Hearum El-Ghamrawy, Saad Rabie Samra, Alaa Elsayed Salama Mustafa Samy Negm. “Advances in the Detection of Hepatopulmonary Syndrome in Cirrhotic Patients: A Comprehensive Review”. Pegem Journal of Education and Instruction, vol. 14, no. 3, Mar. 2024, pp. 641-53, https://www.pegegog.net/index.php/pegegog/article/view/4229.