1. Royal Holloway, University of London; c/o Lifespan Research Group; 11 Bedford Square London WC1B 3RF UK
2. London School of Hygiene & Tropical Medicine; Nutrition & Public Health Intervention Research Unit; Keppel Street London UK WC1E 7HT
3. University of Zurich; Center for Disaster and Military Psychiatry; Birchstrasse 3 Zurich Switzerland 8057