Fundamentals of clinical trials 2026-02-16T01:49:19+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Friedman, Lawrence M., 1942; DeMets, David L., 1944-; Furberg, Curt (Springer, 2010)