1. |
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en.wikipedia.org
https://en.wikipedia.org/wiki/Clinical_trial
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Organic Keywords: 26,359,258
Organic Competitors: 968
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PPC Keywords: 20
PPC Competitors: 165
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2. |
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centerwatch.com
https://www.centerwatch.com/clinical-trials/listings/location/united-states/VA/
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Organic Keywords: 8,521
Organic Competitors: 734
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PPC Keywords: 0
PPC Competitors: 0
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3. |
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cancer.gov
https://www.cancer.gov/about-cancer/treatment/clinical-trials
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Organic Keywords: 64,940
Organic Competitors: 607
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PPC Keywords: 0
PPC Competitors: 11
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4. |
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motherjones.com
http://www.motherjones.com/environment/2010/09/dan-markingson-drug-trial-astrazeneca
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Organic Keywords: 77,623
Organic Competitors: 1,115
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PPC Keywords: 6
PPC Competitors: 391
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5. |
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nytimes.com
http://www.nytimes.com/2013/07/14/opinion/sunday/do-clinical-trials-work.html
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Organic Keywords: 1,974,928
Organic Competitors: 1,096
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PPC Keywords: 1,498
PPC Competitors: 422
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6. |
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nature.com
http://www.nature.com/news/scientists-in-the-dark-after-french-clinical-trial-proves-fatal-1.19189
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Organic Keywords: 327,395
Organic Competitors: 1,048
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PPC Keywords: 49
PPC Competitors: 3,069
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7. |
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medlineplus.gov
https://medlineplus.gov/clinicaltrials.html
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Organic Keywords: 321,170
Organic Competitors: 839
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PPC Keywords: 0
PPC Competitors: 0
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8. |
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clinicaltrials.com
http://www.clinicaltrials.com/
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Organic Keywords: 125
Organic Competitors: 275
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PPC Keywords: 0
PPC Competitors: 0
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9. |
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nhlbi.nih.gov
https://www.nhlbi.nih.gov/studies/clinicaltrials
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Organic Keywords: 48,287
Organic Competitors: 594
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PPC Keywords: 0
PPC Competitors: 0
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10. |
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cancer.org
https://www.cancer.org/treatment/treatments-and-side-effects/clinical-trials.html
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Organic Keywords: 103,512
Organic Competitors: 760
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PPC Keywords: 589
PPC Competitors: 4,284
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