[1] Virginia Commonwealth Univ Hlth, Dept Surg, Div Acute Care Surg Serv, Richmond, VA 23298 USA
[2] Univ Durham, Dept Psychol, South Rd, Durham DH1 3LE, England
[3] Univ Sains Malaysia, Sch Med Sci, Kubang Kerian 16150, Kelantan, Malaysia
[4] Univ Cambridge, Dept Psychiat, Autism Res Ctr, Douglas House,18B Trumpington Rd, Cambridge CB2 8AH, England