1 Department of Neurosciences, Mental Health and Sensory Organs, Suicide Prevention Center, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy. innamorati.marco@libero.it.
2 Department of Neurosciences, Mental Health and Sensory Organs, Suicide Prevention Center, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy. maurizio.pompili@uniroma1.it.
3 Department of Clinical and Molecular Medicine, Sapienza University of Rome and Regional Referral Headache Centre, Sant'Andrea Hospital, Rome, Italy. paolo.martelletti@uniroma1.it.