Waruwu, N. K. ., Sembiring, P. U. ., Kalesaran, V. F. ., Manik, M. J. . and Luturmas, A. D. . (2023) “The Effects of Progressive Muscle Relaxation on Blood Pressure and Headache in Hypertension ”, Jurnal Keperawatan Komprehensif (Comprehensive Nursing Journal), 9(4). doi: 10.33755/jkk.v9i4.494.