Unfortunately, I have no idea. I either use google or pubmed and try to find something through there.
Do you mean articles to read? Because that pretty much depends on the journal you subscribe to/have access to. Where I work, I have access to ALL journals ever conceived from any time frame - the only catch is that some journals I have to order the articles to be mailed to me whereas others are on the site. But I can imagine that having that access is expensive.
Physicians/doctors have access to medical journals/research articles, I would try asking them about the type of access they have and the journals they read. One physician gave me access to his journal subscription online so that I could read the articles, which was nice in a way.