Ramadhani, Pristya, Bramantono Bramantono, and Made Putra Sedana. 2018. “A Chronic Lymphocytic Leukemia Patient With Progressive Multifocal Leukoencephalopathy Caused by John Cunningham Virus”. Acta Medica Indonesiana 50 (2):151. http://www.actamedindones.org/index.php/ijim/article/view/805.