The access to all classic biomedical (e.g., Medline, Excerpta Medica, Biosis, Current Contents, Psychabstracts) and specific HRQoL databases (e.g., Compendium of Quality of Life Instruments by Sam Salek), as well as a systematic review of PRO sites on the Internet (e.g., The American Thoracic Society website), complements our resources.

We also have access to epidemiologic databases such as the "Incidence and Prevalence Database", the french database "Base de Données en Santé Publique (BDSP)"(Public Health Database) and to information on several health care databases on the internet e.g. the Digest of International Health Care Database available on the ISPOR website.

We regularly consult on-line registries of clinical trials e.g. www.clinicaltrials.gov, the metaRegister of Controlled Trials (www.controlled-trials.com).