S. . Prabhakar, Malay Sarkar, S. Sharma, R. S. . Negi, and S. . Sharma, “PERIPHERAL NEUROPATHY AND ABNORMAL VISUAL EVOKED POTENTIALS IN STABLE PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE”, Natl J Med Res, vol. 5, no. 03, pp. 174–178, Sep. 2015.