Go to uptodate.com or your favorite internal medicine textbook and look up those topics. Are you actually looking for an already prepared presentation to use? That's called plagarism.
you can't cover any of these topics in 3 minutes, unless you just talk about the basics (which no one really want to hear about at this point)...the first step is to narrow down your topic, and then yeah I totally agree with others---uptodate is a great resource.