The Purpose Of This Bidding Procedure Is The Hiring Of The Micro -Rnas Sequencing Service By The Pi22/00464 Project, Entitled “Predictive Models Based On Genetic, Transcriptomic And Micro Rna Data For The Study Of Adhd: A Multi -Psychic Approach”, Intended For The Psychiatry Group, Mental Salut And Addicts, Of The Hospital Hospital Fundació Of Recerca (Vhir), Funded By The Carlos Iii Health Institute (Isciii) And Co -Financed By The European Union. Said Sequencing Test Will Generate Micro -Expression Data In Individuals With Adhd And Controls To Identify New Biomarkers And Discover Regulatory Mechanisms Underlying The Disorder.