1. Child and Adolescent Psychiatry Department, Hospital Sant Joan de Déu, Barcelona, Spain.
2. Child and Adolescent Psychiatry Department. Hospital General Universitario Gregorio Marañón, IiSGM, School of Medicine, Universidad Complutense, Madrid, Spain.
3. Child and Adolescent Psychiatry and Psychology, Neurosciences Institute, Hospital Clínic Universitari de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
4. Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Barcelona, Spain.
5. Child and Adolescent Psychiatry and Psychology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain.
6. Department of Cardiology. Hospital General Universitario Gregorio Marañón, IiSGM, School of Medicine, Universidad Complutense, Madrid, Spain.