Esber, Natacha, and Thomas Schulz. “Leukemic Meningitis in Chronic Lymphocytic Leukemia: A Rare Condition Responding to Intrathecal Methotrexate”. Kansas Journal of Medicine 2, no. 4 (September 1, 2009): 96–98. Accessed April 11, 2025. https://journals.ku.edu/kjm/article/view/11303.