A Literature Review: The Effectiveness of Endorphin Massage on Reducing Dysmenorrhea Pain in Young Women: Literature Review: Efektifitas Endorphin Massage Terhadap Penurunan Nyeri Dismenore Pada Remaja Putri . JKMD. 2022;1(2):109-123. doi:10.58516/jkmd.v1i2.37