National Institutes of Health is a good place to start. My university library has a lot of medical databases (subscriptions because of our nursing program). If there is something you want me to look up for you, let me know. I can print out articles and send them to you, or send PDF to get them there quicker. Sometimes reading these things can scare the shit out of you, so go forward in your research, but take time to evaluate the source and make a list of things to ask your doctors about.

Good luck!

Maggie