Very well put Par and exactly what I was talking about.

Just as a side note of interest, some older aspects of medicine are still used today...they use leeches on skin grafts to help restore blood flow to areas of burn vicitims or accident victims who need large grafts. Yes even today in the largest hospitals in the world, just typed one up the other day. So while some things change, some fundamental things do stay the same, and continue to be helpful.