While you're waiting for responses from people who have dealt specifically with MEC, you can reach out to them by searching message-board posts for mucoepidermoid, using the search box in the upper right corner of each forum page. There are six pages of posts (130 results) with that word. Clicking on the poster's name will give you his or her profile, including e-mail address, along with an option to send a Private Message, which the poster will see the next time he or she logs in.