Clinical evaluation was carried out by trained doctoral-level clinical research interviewers. Participants were assessed for their capacity to participate in the research study upon interview and according to best practices [22]. All participants underwent a SCID-V interview. Controls also completed a PQ-B and patients completed a Positive and Negative Symptom Score Structured Interview (PANSS). Participants were asked about current medications (see Supplementary Material for details). Participants who completed the clinical evaluation and venipuncture were invited to return for a subsequent visit for an optional lumbar puncture.
The study protocol was approved by the Stanford University Institutional Review Board (IRB Protocol 47825). All participants gave written informed consent. Participants were compensated for study participation.
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