Nisha Rani S S, Nelta S Tharakan, Gomathi Swaminathan, Sattanathan .K, Shanmuga Sunadaram .R, and Sambathkumar .R, “Prescribing pattern of anti-hypertensive drugs: A prospective study”, IJPAR , vol. 4, no. 1, pp. 35–40, Jan. 2015.