[1] Royal Coll Surgeons Ireland, Dept Psychiat, Dublin 2, Ireland
[2] Univ Coll Dublin, UCD Conway Inst Biomol & Biomed Res, Proteome Res Ctr, Dublin 2, Ireland
[3] Univ British Columbia, Dept Psychiat, Vancouver, BC, Canada
[4] Royal Coll Surgeons Ireland, Dept Mol & Cellular Therapeut, Dublin 2, Ireland
[5] Univ Coll Dublin, UCD Conway Inst Biomol & Biomed Res, Sch Med & Med Sci, Dublin 2, Ireland
[6] Kings Coll London, Sect Stress Psychiat & Immunol, Div Psychol Med, Inst Psychiat, London WC2R 2LS, England
[7] Univ London Imperial Coll Sci Technol & Med, Kennedy Inst, Div Rheumatol, London, England