Singh, Satendra, et al. “Validity of Visual Evoked Response in Measuring Ethambutol Induced Optic Neuritis in Tuberculosis Patients: Evaluation Using Receiver Operating Characteristic (ROC) Curves”. Pakistan Journal of Physiology, vol. 3, no. 2, Dec. 2007, https://pjp.pps.org.pk/index.php/PJP/article/view/643.