1. a Department of Neurosciences, Mental Health and Sensory Organs, Suicide Prevention Center, Sant'Andrea Hospital , Sapienza University of Rome , Italy
2. b Department of Neurosciences Division of Psychiatry , University of Parma , Italy
3. c Department of Anatomy, Pharmacology and Forensic Sciences, Section of Legal Medicine , University of Parma , Italy
4. d Social Work and Social Administration Department , The University of Hong Kong
5. e The Richard Stockton College of New Jersey , Pomona , New Jersey , USA
6. f Social Work and Social Administration Department, Centre for Suicide Research and Prevention , The University of Hong Kong
7. g Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, Section of Psychiatry , University of Genova , Italy