 The purpose of this study is to collect and analyze data on the characteristics of women who are seeking treatment for endometriosis, suspected endometriosis, pain andor infertility as part of their standard medical care. Data collected will contribute to the development of guidelines for the surgical management of endometriosis. In addition, specimens will be collected for future testing regarding diagnosing, andor staging of endometriosis, or suspected endometriosis, pain and infertility. 