| clinicaltrials gov registration requirements | 0.52 | 0.6 | 1438 | 44 | 65 |
| clinical trials registration requirements | 1.64 | 0.2 | 6274 | 41 | 90 |
| clinicaltrials.gov registration | 1.95 | 1 | 1488 | 31 | 100 |
| clinicaltrials.gov requirements for posting | 0.35 | 1 | 1613 | 43 | 61 |
| clinicaltrials.gov registration number | 0.82 | 0.4 | 4335 | 38 | 96 |
| trial registration clinicaltrials.gov | 1.15 | 1 | 372 | 37 | 34 |
| registration of clinical trials | 0.47 | 0.9 | 6422 | 31 | 32 |
| register clinical trial gov | 1.13 | 0.2 | 7143 | 27 | 33 |
| http://register.clinicaltrials.gov | 1.88 | 0.7 | 4774 | 34 | 12 |
| clinical trial for registration | 1.13 | 1 | 2156 | 31 | 20 |
| requirements for clinical trials | 0.95 | 0.8 | 3220 | 32 | 98 |
| clinicaltrials gov website info | 0.02 | 0.7 | 9202 | 31 | 21 |
| register.clinicaltrials.gov | 0.45 | 1 | 8409 | 27 | 19 |
| registered in clinicaltrials.gov | 1.38 | 0.8 | 714 | 32 | 10 |
| regulatory requirements for clinical trials | 0.64 | 0.4 | 3625 | 43 | 45 |
| clinicaltrials.gov registry | 0.23 | 0.3 | 6697 | 27 | 64 |
| clinical trial online registration | 0.67 | 0.2 | 1750 | 34 | 32 |
| clinical trial eligibility criteria | 0.56 | 0.9 | 9504 | 35 | 66 |
| regulations for clinical trials | 1.41 | 0.3 | 736 | 31 | 24 |
