EFFECTIVENESS OF BACK ENDORPHIN MASSAGE AGAINST DECREASED DYSMENORRHEA IN STUDENTS OF THE FACULTY OF NURSING, UNIVERSITAS SUMATERA UTARA. Al Insyirah International Scientific Conference on Health, [S. l.], v. 3, n. 1, p. 218–224, 2023. Disponível em: https://jurnal.ikta.ac.id/aisch/article/view/2389. Acesso em: 22 jul. 2026.