| Clinicaltrials.gov (USA) |
1561(0.5) |
339,863 |
| Chinese Clinical Trial Registry (ChiCTR) |
648 (2.0) |
32,553 |
| EU Clinical Trials Register (EU-CTR) |
196 (0.5) |
37,185 |
| Iranian Registry of Clinical Trials (IRCT) |
195 (0.8) |
24,573 |
| Clinical Trials Registry—India (CTRI) |
99 (7.0) |
1475 |
| German Clinical Trials Register (DRKS) |
67 (1.7) |
3959 |
| Japan Primary Registries Network (JPRN) |
64 (0.2) |
28,794 |
| Australian New Zealand Clinical Trials Registry (ANZCTR) |
52 (0.2) |
27,187 |
| The Netherlands National Trial Register (NTR) |
52 (0.6) |
8613 |
| International Standard Randomized Control Number (ISRCTN) |
35 (0.4) |
11,381 |
| Brazilian Clinical Trials Registry (ReBec) |
10 (0.2) |
4085 |
| Pan African Clinical Trial Registry (PACTR) |
6 (0.5) |
1162 |
| Clinical Research Information Service (CRiS), Republic of Korea |
2 (0.4) |
505 |
| Lebanese Clinical Trials Registry (LBCTR) |
2 (3.0) |
71 |
| Peruvian Clinical Trial Registry (REPEC) |
0 (0.0) |
1849 |
| Sri Lanka Clinical Trials Registry (SLCTR) |
1 (0.3) |
349 |
| Thai Clinical Trials Registry (TCTR) |
9 (3.0) |
336 |
| Cuban Public Registry of Clinical Trials(RPCEC) |
19 (NA) |
NA |
