Singh, Mohita, Indu Khurana, Zile Singh Kundu, and Anup Aggarwal. 2016. “Link of Sympathetic Activity With Cardiovascular Risk in Patients of Cervical Spondylosis”. International Journal of Clinical and Experimental Physiology 3 (1), 41-44. https://ijcep.org/index.php/ijcep/article/view/285.