- Clinical Research Studies: risk level A, B, or C in the Optimon risk-assessment scale, with or without a sponsor and the advice of an ethical committee, starting in 2008 and ending before the end of 2010, with a foreseen accrual of 20 patients or more, multicentric with at least 4 clinical sites, with a paper or electronic CRF, with the participating agreement of the coordinating investigator and the sponsor.