| Name | Metaprefix | URI |
|---|---|---|
| ClinicalTrials.gov | clinicaltrials |
https://www.clinicaltrials.gov/study/NCT00222573 |
| Bioregistry | bioregistry |
https://bioregistry.io/clinicaltrials:NCT00222573 |
| Identifiers.org | miriam |
https://identifiers.org/clinicaltrials:NCT00222573 |
| Name-to-Thing | n2t |
https://n2t.net/clinicaltrials:NCT00222573 |