. . . . . . . "[Other studies have implicated the neurotransmitter serotonin or polymorphisms in the serotonin transporter gene (5HTT) as an important source of variability in externalizing behaviors such as aggressivity, conduct disorder, and attention deficit-hyperactivity disorders (ADHD).]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2017-02-21"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2017-10-17T13:16:16+02:00"^^ . . . . . . . . . . . "v5.0.0.0" . "v5.0.0" .