The Effect of Progressive Muscle Relaxation on Pain Reduction And Sleep Quality in Dyspepsia Functional Patients in the Inpatient Room of Muhammadiyah RSU Lumajang. rehat [Internet]. 2024 Dec. 1 [cited 2026 Jun. 20];5(2). Available from: https://ejournal.mandalanursa.org/index.php/Rehat/article/view/7645