OCD Clinical and Research Unit;
Department of Psychiatry;
Hospital de Bellvitge;
Barcelona 08907;
Spain;
Bellvitge Biomedical Research Institute-IDIBELL;
Barcelona 08907;
Spain;
CIBERSAM(Centro de Investigaci on en Red de Salud Mental);
Carlos Ⅲ Health Institute;
Madrid 28029;
Spain;
Department of Clinical Sciences;
Faculty of Medicine;
University of Barcelona;
Barcelona 08907;
Spain;
Deep brain stimulation; Obsessive-compulsive disorder; Predictors of response; Side effects; Short-term; Long-term;