N. Sethi, S. Puri, and N. Jamwal, “Association of primary dysmenorrhea with socio-economic status and education level in patients attending gynaecology OPD in a tertiary care centre: a questionnaire-based study”, Int J Reprod Contracept Obstet Gynecol, vol. 13, no. 6, pp. 1420–1424, May 2024.