Pain reactivity and plasma beta-endorphin in children and adolescents with autistic disorder.
Tordjman S, Anderson GM, Botbol M, Brailly-Tabard S, Perez-Diaz F, Graignic R, Carlier M, Schmit G, Rolland AC, Bonnot O, et al. PLoS One. 2009 Aug 26; 4(8):e5289. Epub 2009 Aug 26.