Mireia Solerdelcoll1, Celso Arango2, Gisela Sugranyes3. 1. Department of Child and Adolescent Psychiatry, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom; Department of Medicine, University of Barcelona, Barcelona, Spain. Electronic address: mireia.solerdelcoll_arimany@kcl.ac.uk. 2. Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health, Hospital General Universitario Gregorio Marañón, IiSGM, CIBERSAM, School of Medicine, Universidad Complutense, Madrid, Spain. 3. Department of Medicine, University of Barcelona, Barcelona, Spain; Department of Child and Adolescent Psychiatry, Institute of Neuroscience, Hospital Clínic de Barcelona, IDIBAPS, CIBERSAM, Barcelona, Spain.