382 PHASE-III Randomized monocentric controlled trial comparing clinical and cost-effectiveness analysis of botulinum toxin uterine injections versus placebo for severe dysmenorrhea and chronic pelvic pain from uterine origin after standard therapeutic failure. (March 2022) - Bautrant, E.; Lévêque, C.; Santos, M.; Kouame, J.; Franké, O.; Amiel, C.; Bensousan, T.; Thiers-Bautrant, D.; Siani, C.