Your local hospital and/or nursing school likely has a "Registered Nurse/Dietition" who would have numerous resources to help with your questions. It's an established "specialization" in nursing that's often overlooked by even the physicians who prescribe diets for people, and the ones I've met have been happy to have a bit of attention and recognition of their skills.

If you'd like a conversation starter, ask one how many calories in a 4 ounce serving of fried squirrel. Guaranteed to make them pull out every book they've got, but you might get their interest up.

John