[1] Univ Athens, Sch Med, Attikon Hosp, Allergy Clin Res Ctr,Allergy Unit, GR-11527 Athens, Greece
[2] Univ Athens, Sch Med, Eginit Hosp, Dept Psychiat, GR-11527 Athens, Greece
[3] Univ Athens, UMHRI, A Sygros Hosp, Athens, Greece
[4] Univ Athens, Dept Dermatol 1, A Sygros Hosp, Athens, Greece
[5] Tufts Univ, Sch Med, Dept Pharmacol & Expt Therapeut, Boston, MA 02111 USA
[6] Tufts Univ, Sch Med, Dept Biochem, Boston, MA 02111 USA
[7] Tufts Univ, Sch Med, Dept Internal Med, Boston, MA 02111 USA
[8] Tufts Univ, Sch Med, Dept Psychiat, Boston, MA 02111 USA
[9] Tufts Univ New England Med Ctr, Boston, MA USA