Karim, Shahid, Nadeem Hayat Malik, Aftab Tariq, and M. Zubair. “Sustained Release Verapamil In Hypertensive Patients”. Pakistan Heart Journal 27, no. 3-4 (August 6, 2012). Accessed November 24, 2024. https://pakheartjournal1.pcs.org.pk/index.php/pk/article/view/229.