wondering if anyone can help us.

We are two medical students from the UK and we would really like to spend our medical elective in Ambergris Caye doing community work. The problem is that we are finding it very difficult to find any contact details of anyone who can help us arrange this. We would ideally like to be attached to one of the health centres in San Pedro.
Does anyone have any information that would help us?

We would be extremely grateful.