I wasn't sure exactly where to put this on the forum, but it's a very interesting article that some people who visit here might find useful reading.

782 Developmental Medicine & Child Neurology 2004, 46: 776–782

http://journals.cambridge.org/action...ine&aid=255857
Full PDF available there to the right

Melatonin therapy for circadian rhythm sleep disorders in children with multiple
disabilities: what have we learned in the last decade?

James E Jan, Roger D Freeman