This is out of a new book I just purchased. Looks to be a real informative book. The title is "Bariatric Surgery - Around The World One Of The Most Important Medical..."
I bought it on Amazon.com in "Kindle" form. I am sure it will answer some questions for you along with my favorite, "An Experts Guide To Weight Loss Surgery" By: Dr Garth Davis of Big Medicine. Dr Garth covers the top four procedures in his book from A-Z in simple language. it is a must read for the most bang for your buck, I also purchased my copy of this through Amazon.com.
My Prayer For You Is That The Lord Walk Daily By Your Side Blessing You In Each Step.