1. Department of Neurosciences, Mental Health and Sensory Organs; Suicide Prevention Center; Sant'Andrea Hospital; Sapienza University of Rome; Rome Italy
2. Department of Neurosciences, Division of Psychiatry; University of Parma; Parma Italy
3. Mount Sinai School of Medicine and James J. Peters Veterans' Administration Medical Center; New York NY USA
4. Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics; Maternal and Child Health; Section of Psychiatry; University of Genova; Genova Italy