Ginting, Chrismis, Antonius Waruwu, Cahyanto Mendrofa, Nita Maria, and Suci Syafira. 2020. “The Effect of Back Massage on the Intensity of Pain in Rheumatism Ladders”. Jurnal Penelitian Perawat Profesional 2 (4), 555-62. https://doi.org/10.37287/jppp.v2i4.214.