Mahmood, Rashid, Nargis Parveen, Ghulam Jillani, Abdul Jalal Safi, Salah ud Din, Ihtesham ul Haq, Jamil ur Rehman, and Amin ul Haq. 2011. “EFFECT OF NOISE ON HEART RATE”. Journal of Postgraduate Medical Institute 20 (1). https://jpmi.org.pk/index.php/jpmi/article/view/129.