"Healthy Volunteers" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
Persons with no known significant health problems who are recruited to participate in research to test a new drug, device, or intervention as controls for a patient group. (from http://clinicalcenter.nih.gov/recruit/volunteers.html, accessed 2/14/2013)
This graph shows the total number of publications written about "Healthy Volunteers" by people in this website by year, and whether "Healthy Volunteers" was a major or minor topic of these publications.
To see the data from this visualization as text, click here.