Beginning January 1, 2015, clinical trials must be registered prior to submission of a primary report of findings. Primary reports of findings from unregistered clinical trials will not be peer reviewed. The registration requirement does not apply to pilot RCTs or secondary analyses.
Trials should be registered on acceptable databases listed at one of these sites:
Include the registry and trial number in the letter to the editor uploaded with your original submission. For questions, please contact the Susan J. Henly, Editor