title: [How long is it necessary to begin a multicentric clinical trial in Spain?].
authors.forename: Rafael
authors.initials: R
authors.lastname: Dal-Ré
authors.forename: Pilar
authors.initials: P
authors.lastname: García-Corbeira
authors.forename: Elena
authors.initials: E
authors.lastname: Morejón
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic / Q000941:ethics / Q000592:standards; D005060:Europe; D006801:Humans; D015337:Multicenter Studies as Topic / Q000941:ethics / Q000592:standards; D013030:Spain; D013997:Time Factors