Hameed S, Almas A, Ahmed FS, Khan AH. Descriptive Controlled Study Regarding the Effects of Negative Chronotropic Agents on Lowering Heart Rate and Morning Surge in a Tertiary Care Hospital . Nat J Health Sci [Internet]. 2021Jan.4 [cited 2024May2];1(1):25-9. Available from: https://ojs.njhsciences.com/index.php/njhs/article/view/153