- Pakistan 101 studies
- Panama 70 studies
- Papua New Guinea 4 studies
- Paraguay 5 studies
- Peru 340 studies
- Philippines 267 studies
- Poland 1309 studies
- Portugal 465 studies
- Puerto Rico 877 studies
Clinical Trials Authorship and Review
Clinical Trials content is provided directly by the U.S. National Institutes of Health via ClinicalTrials.gov and is not reviewed separately by ClinicalTrialsFeeds.org. Every page of specific clinical trials information contains a unique identifier which can be used to find further details directly from the National Institutes of Health.
