according to Endometriosis.org Endometriosis.org http://endometriosis.org/frequently-asked-questions-faq/ according to Endometriosis.org according to Endometriosis.org Endometriosis.org according to Endometriosis.org according to Endometriosis.org according to Endometriosis.org according to Endometriosis.org according to Endometriosis.org