Infantile GM1 Gangliosidosis Presenting with Neuroregression and Leukodystrophy: A Case Report - Khairunnisa Mohd Ansari; Noor Azlin Azraini Che Soh; Noor Hafidah Hamran; Bin Alwi Zilfalil; Julaina Abdul Jalil; Ahmad Shahir Mohamad Nazri; Noor Mohd Firdaus Othman (Malaysian Journal of Paediatrics and Child Health, 2026)