When are clinical trials registered? An analysis of prospective versus retrospective registration
Crossref DOI link: https://doi.org/10.1186/s13063-016-1310-8
Published Online: 2016-04-15
Published Print: 2016-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Harriman, Stephanie L.
Patel, Jigisha