title: Regulatory process effects clinical trial registration in Spain.
authors.affiliation: University of Maryland School of Medicine, Baltimore 21201-1590.
authors.forename: K
authors.initials: K
authors.lastname: Dickersin
authors.forename: F
authors.initials: F
authors.lastname: Garcia-Lopez
mesh_terms: D002986:Clinical Trials as Topic / Q000331:legislation & jurisprudence*; D006801:Humans; D012042:Registries; D013030:Spain