Source Legend
- Human-provided
Entered or confirmed by an authorized person.
- Google
Imported Google information.
- Trial-derived
Calculated or extracted directly from associated trial records.
- AI-inferred
A capability inferred from trial history.
- AI-extracted
An explicit statement extracted from an official source.
- Public registry
Information from a public registry.
- Site record
Information held in the site record.
Source: Site record. DCOL Center for Clinical Research

Basic Information
Site Overview
We are a dedicated research department within Diagnostic Clinic of Longview (DCOL), the largest multi-specialty group practice in Northeast Texas. Longview is located in Northeast Texas with a population of about 82,000. However, due to the large number of surrounding towns and communities we draw patients from a total population of about 250,000. Our group practice has an active database of over 100,000 patients.
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