You take your victim as you find him, that's the law. Another words, if he had sickle cell trait, so what? If he was more susceptible to death from a beating than someone else, should his parents have had to worry about that when they put him in a program that was supposed to be helpful? Who would have thought a bunch of grown men twice or three times his size would have beaten the holy living shit out of him while some fat-ass nurse stood and watched? No matter what they determine the cause of death was, they are responsible. They murdered this child!