Take a look:
http://www.ivfauthority.com/2009/05/endometriosis-ivf-is-more-successful.html
I did 3 IUI's with no success. I have antisperm antibodies and endo in addition to DOR. I really believe endo can damage the eggs. I didnt do any kind of immunotherapy though. Ivf was my golden ticket! Wish I would have done it sooner.