Wow. This is a great topic that i honestly wasn't really aware was a thing. I was looking at this site and i found out what they use to do this procedure and i couldn't even believe it. I think it's really awesome your doing this subject and im really excited to see what you find out next. An idea for you is maybe looking into the differences in the different types.
Thanks for sharing this, it was really eyeopening to learn about. Keep up the great work!