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Attention deficit hyperactivity disorder - Wikipedia
What is ADHD? | CDC - Centers for Disease Control and Prevention
ADHD: Symptoms, Types, Testing, and Treatment - WebMD
Attention-deficit/hyperactivity disorder (ADHD) in children - Mayo Clinic
ADHD (Attention Deficit Hyperactivity Disorder): What Is It? - Healthline
Attention-Deficit/Hyperactivity Disorder - National Institute of …
Psychiatry.org - What is ADHD?
Adult attention-deficit/hyperactivity disorder (ADHD)
Learn About Attention-Deficit / Hyperactivity Disorder (ADHD)
Attention Deficit Hyperactivity Disorder | National Institute of ...