All are true regarding medical treatment of endometriosis except?
Oral progestins cause decidualization of endometrial tissue Injectable progestagen is used once in 3 months in the management of pain of endometriosis Levonorgestrel releasing intrauterine system reduces dysmenorrhoea in endometriosis Gestrinone is given orally 2.5 - 5 mg per day to induce endometrial atrophy