Efficacy of the levonorgestrel-releasing intrauterine device in the treatment of recurrent pelvic pain in multitreated endometriosis

1. Matorras, R.
2. Ballesteros, A.
3. Prieto, B.
4. Ocerin, I.
5. Expósito, A.
6. Pijoan, J.I.
7. Crisol, L.