Siregar A hanif, Gultom A boru. The influence of progressive muscle relaxation on stress, blood pressure, and quality of life in hypertension patients in the working area of Muliorejo Puskesmas, deli Serdang regency. IJANS [Internet]. 2018 Feb. 7 [cited 2024 Nov. 21];7(1):39-43. Available from: https://sciencepubco.com/index.php/IJANS/article/view/8931