Rai Lab - Houston, Texas

DM Clinical Research - Bellaire (Formerly TCDD) - Houston, Texas

Clinical Trials - Houston, Texas

Center for Innovations in Quality, Effectiveness and Safety - Houston, Texas

Brown Foundation Institute Of Molecular Medicine - Houston, Texas

Southwest Clinical Trials - Houston, Texas

HEALTH SCIENCE RESEARCH, INC - Houston, Texas

Aspira International Clinical Research - Pasadena, Texas

Houston Center for Clinical Research - Sugar Land, Texas

Monetary Research Institute - Houston, Texas