Institute of Physiology, Division of Immunophysiology,

First Dept. of Pediatrics

Peninsula Medical School, 25 Victoria Park Road, Exeter, Devon EX2 4NT, England

Faculty of Medicine, Section of Psychiatry, Department of Medical Sciences of Communication and Behaviour, University of Ferrara, Ferrara, Italy

Department of Psychology, University of Hull, United Kingdom

Piyavate Hospital, Bangkok, Thailand

Leiden University, The Netherlands