1. Clinical Research: Clinical research involves conducting trials to test new medical treatments, drugs, or devices on human subjects. Career opportunities in this field include clinical research coordinators, clinical research associates, clinical trial managers, and clinical research scientists. 2. Health Services Research: Health services research focuses on studying the delivery, organization, and financing of healthcare services. Career opportunities in this field include health policy analysts, healthcare consultants, health economists, and healthcare administrators. 3. Epidemiology: Epidemiology is the study of patterns and causes of diseases in populations. Career opportunities in this field include epidemiologists, public health researchers, biostatisticians, and data analysts. 4. Biomedical Research: Biomedical research involves studying the mechanisms of diseases and developing new treatments and therapies. Career opportunities in this field include biomedical scientists, research technicians, laboratory managers, and research assistants. 5. Public Health Research: Public health research focuses on improving the health of populations through research and interventions. Career opportunities in this field include public health researchers, community health educators, program managers, and policy analysts. 6. Social and Behavioral Science Research: Social and behavioral science research involves studying the impact of social and psychological factors on health and disease. Career opportunities in this field include social scientists, behavioral health researchers, health psychologists, and program evaluators.