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Article

Insomnia in Vietnam era veteran twins: influence of genes and combat experience.

Sleep - 1 Aug 1994

McCarren M, Goldberg J, Ramakrishnan V, Fabsitz R

Abstract excerpt

Genetic and environmental influences on insomnia were studied in 2,825 pairs of Vietnam era veteran male twins. The self-reported sleep problems studied included trouble falling asleep, trouble staying asleep, waking often, waking tired and a composite sleep scale. Twin correlations for each of the sleep problems were larger in monozygotic than in dizygotic pairs, with heritability estimates ranging from 0.21 to...

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Identifiers

PMID: 7991958
DOI: 10.1093/sleep/17.5.456

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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