Dr. Sudlak in Falmouth, ME is a well-known advocate ... his office could probably help you. I was anxious, but cautiously optimistic, to see if MMJ would work for me. It's been three months and, while not suffering from the same condition, I can honestly say that it's given me my life back.
If you can find it on the Internet, find the Katie Show that aired (Friday or Monday, July 19 or 22, I think) .. the woman was called the Martha Stewart of Weed or whatever. They had some remarkable footage.
Here's a link to the doctor I think might be able to give you some information. I understand he's not in Vermont, but you said you were looking for credible evidence, so here goes.