There are some good info links at the bottom (or end, if you will) of the article.

Thanks for posting this. I knew about this and how it relates to my own use of pain meds. And for anyone with chronic pain. The last page I sent to my daughter whose BF is addicted to God only knows what all. He blames it on having lost a finger in a construction accident and the pain killers he was given. That's bull IMO because normal doses taken normally (not snorted) don't cause what he's blaming his addiction on.