[1] Univ Bari, Dept Neurol & Psychiat Sci, Sect Mental Disorders, Psychiat Neurosci Grp, I-70124 Bari, Italy
[2] IRCCS Casa Sollievo Sofferenza, Dept Neuroradiol, San Giovanni Rotondo, FG, Italy
[3] NIMH, Genes Cognit & Psychosis Program, NIH, Bethesda, MD 20892 USA
[4] IRCCS Casa Sollievo Sofferenza, Mendel Sect, Rome, Italy
[5] Univ Roma La Sapienza, Dept Expt Med, Rome, Italy