1. Department of Psychiatry, Faculty of Medicine Universidad Complutense, Madrid, Spain
2. Department of Radiology, Gordon Center for Medical Imaging, Massachusetts General Hospital Harvard University, Boston, USA
3. Department of Biostatistics, Faculty of Medicine Universidad Complutense, Madrid, Spain
4. Department of Ear, Nose and Throat, Hospital Clínico Universitario San Carlos, Madrid, Spain
5. Department of Psychiatry and Neurology, Institute of Neuroscience, University of Texas Rio Grande Valley School of Medicine, Harlingen, USA