The American Academy of Family Practice provides public access to their journal articles. They are written for physicians, but they're relatively readable for informed laypersons. Relatives, caretakers and friends of persons with cognitive disabilities may want to review and keep a recent summary of care recommendations: Medical Care of Adults with Mental Retardation - June 15, 2006. It's written specifically for MR, but it's a good source of ideas for the care of all persons with cognitive disability.
I don't haven't seen anything of this sort before. Kudos to AFP for covering the topic. (A later issue also covers care of the homeless, an unfortunately related domain.)