[1] Univ Udine, Dept Med DAME, Unit Psychiat, I-33100 Udine, Italy
[2] Kings Coll London, Inst Psychiat Psychol & Neurosci, Dept Psychosis Studies, London SE5 8AF, England
[3] Univ Udine, Dept Med DAME, Infect Dis Div, Udine, Italy
[4] Friuli Cent Univ Hlth Serv ASUFC, I-33100 Udine, Italy
[5] Univ Insubria ASST Sette Laghi, Dept Med & Surg, Infect & Trop Dis Unit, I-21110 Varese, Italy
[6] Univ Udine, Dept Med DAME, Div Med Stat, I-33100 Udine, Italy
[7] Univ Udine, Sch Nursing, Dept Med DAME, I-33100 Udine, Italy