1. The ClinicalTrials.gov results database–update and key issues;Zarin;N Engl J Med,2011
2. The significance of clinical trials;Novitzke;J Vasc Interv Neurol,2008
3. FDAAA 801 and the final rule,2017
4. Studies registered in non-ClinicalTrials.gov accounted for an increasing proportion of protocol registrations in medical research;Banno;J Clin Epidemiol,2019
5. National Institutes of Health. NIH policy on the dissemination of NIH-funded clinical trial information. US Department of Health and Human Services. 2017. Available at:https://grants.nih.gov/policy/clinical-trials/reporting/understanding/nih-policy.htm. Accessed November 2, 2021.