Chunk #1 — Methods and Materials — Identification of Lifetime Trauma Exposure and PTSD Diagnosis

Source

Genome-wide association study identifies new susceptibility loci for posttraumatic stress disorder.

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Sample collection and diagnostic interviews were performed by trained interviewers using the Semi-Structured Assessment for Drug Dependence and Alcoholism (SSADDA) to derive diagnoses for lifetime psychiatric and substance use disorders based on DSM-IV criteria (20,21).