Pinset , A.; Chumin, C.; Thongsud, J.; Sakkarin , P.; Kueana, M.; Saisamphran, W.; Duangkaew, K.; Morya, S.; Chaichana, N. Effects of Herbal Balm on Pain Relief from Primary Dysmenorrhea in Nursing Students. J Thai Nurse Midwife Counc 2026, 41, 391-406.