Kumar, Pradeep, Dileep Kumar Verma, Jagdish Narayan, Preeti Kanawjia, and Archna Ghildiyal. 2014. “Effect of Coffee on Blood Pressure and Electrocardiographic Changes in Nicotine Users”. Asian Journal of Medical Sciences 6 (3):46-48. https://nepjol.info/index.php/AJMS/article/view/10090.