[1] Univ Roma La Sapienza, St Andrea Hosp, Dept Neurosci Mental Hlth & Sensory Organs, Suicide Prevent Ctr, I-00189 Rome, Italy
[2] Semmelweis Univ, Dept Clin & Theoret Mental Hlth, Kutvolgyi Clin Ctr, H-1085 Budapest, Hungary
[3] Mt Sinai Sch Med, New York, NY USA
[4] James J Peters Vet Adm Med Ctr, New York, NY USA
[5] Univ Genoa, Sect Psychiat, Dept Neurosci Rehabil Ophthalmol Genet Maternal &, Genoa, Italy
[6] Villa Rosa Med Res Ctr, Viterbo, Italy