"I found the Guidebook very comprehensive and written in a professional and clear style. I would recommend your books to anyone who has a problem and needs to go to a doctor. Trusting your health issues in the hands of a doctor who may or may not be good or professional is no longer acceptable. I found that my father-in-law's doctor does not actually know about many of the studies described in the book even though he is considered to be one of the "specialists" in this domain."