Collection of Plasma and Serum Samples From Individuals Initiating Sofosbuvir for Chronic Hepatitis C for Testing

Mercy Medical Center, Baltimore

Investigative Clinical Research, Annapolis

Digestive and Liver Disease Specialists, Norfolk

Infectious Diseases Associates of Central Virginia, Lynchburg

Duke University Medical Center, Durham

Cumberland Research Associates, LLC, Fayetteville

Asheville Gastroenterology Associates, PA, Asheville

Charleston GI Specialists, Charleston

Gastrointestinal Specialists of Georgia, Marietta

Atlanta Gastroenterology Associates, Atlanta

Schiff Center for Liver Disease, Miami

Nashville Medical Research Institute, Nashville

Quality Medical Research, PLLC, Nashville

Indianapolis Gastroenterology Research Facility, Indianapolis

Kansas City Gastroenterology, Kansas City

Arkansas Gastroenterology, North Little Rock

Options Health Research, LLC, Tulsa

Cure C Consortium, Houston

Liver Associates of Texas, P.A., Houston

Research Specialists of Texas, Houston

The Texas Liver Institute, San Antonio

Central Texas Clinical Research, Austin

Austin Center for Clinical Research, Austin

South Denver Gastroenterology, PC, Englewood

Empire Clinical Research, Upland

Inland Empire Liver Foundation, Rialto

Island View Gastroenterology, Ventura

Franco Felizarta, MD, Bakersfield

Kaiser Permanente, San Francisco

University of Washington, Seattle

Yale School of Medicine, New Haven

Commonwealth Clinical Studies, Brockton

The Research Institute, Springfield

Fundacion de Investigacion de Diego, San Juan