Hi,
With the proper advisories on your site, I think that a site that keeps track of medical research is within reason. However, I am quite sure you will need to but some cautions on your site, and I do think you need to have legal advice.
Both a Wiki and a forum invite user comment. Comments would have to be well monitored on any medical site. I am not sure what you would need to shield yourself, but I think you can readily understand how comments on a medical site that are beyond certain bounds may invite problems. I have been involved in medical and alternative health forums that are successful, but I am not sure what they do to appropriate protect themselves. Maybe they don't.
Rich
