Kuppusamy, Saranya, Dhanapal Niraimathi, and Nitin Ashok John. “Assessment of Heart Rate Variability and Reaction Time in Traffic Policemen”. International Journal of Medical Research and Review 4, no. 11 (November 30, 2016): 1958-1964. Accessed November 23, 2024. https://ijmrr.medresearch.in/index.php/ijmrr/article/view/748.