The mission of the International Society for Quality of Life Research (ISOQOL) is to advance the scientific study of health-related quality of life and other patient-centered outcomes to identify effective interventions, enhance the quality of health care and promote the health of populations. With over 1,000 members representing 47 countries, ISOQOL is an international society with activities focused on promotion of high quality research in the science of health related quality of life (HRQL) measurement.