The Society's Research Program is composed of two main umbrellas: Extramural Grants and Intramural Research. Intramural Research is comprised of six programs: Epidemiology, Surveillance Research, Health Services Research, International Tobacco Control Research, the Behavioral Research Center (BRC), and the Statistics and Evaluation Center (SEC). The Extramural Grants Department reviews and administers both Research Grants and Health Professional Training Grants (HPTGs). HPTGs include both grants and scholarships awarded to nurses, physicians, and oncology social work professionals. As the nation's largest private, not-for-profit source of funds for scientists studying cancer, the American Cancer Society (ACS) focuses its funding on investigator-initiated, peer-reviewed proposals. All intramural department staff conduct applied cancer research in-house.