This resource offered by the US National Library of Medicine is referred to as PubMed® Central. It a a free digital archive of biomedical and life sciences journal literature. Journals and scholars submit their materials, one article at a time. Therefore, do not expect to find complete professional journals and publications here. However, this is a great way for students to find current information on a particular topic without having to invest in what are most likely pricy subscriptions.
Some materials are identified as being under “embargo.” This means that the biomedical and life sciences journal literature contains only a preview or excerpt available. In time, the embargo is lifted and the entire article will be made available. (The site has a list of the participating journals which identifies the default embargo or release delay of each journal.)
You’ll have to search for your topic but there’s tons of material here much of which would be good for students pursuing a medical degree.
View this Free Online Material at the source:
US National Library of Medicine