Clinical Research: Free Web databases
Free Web resources
Peer-reviewed research articles are available for free on the Web; you just need to know where to find them!
Open Access Journals
What is Open Access?
According to the Public Library of Science (PLoS), it is:
Open Access stands for unrestricted access and unrestricted reuse. With Open Access, researchers can read and build on the findings of others without restriction. Much scientific and medical research is paid for with public funds. Open Access allows taxpayers to see the results of their investment. Open Access means that teachers and their students have access to the latest research findings throughout the world.
Here's more info from PLoS: https://www.plos.org/open-access