Proof of Heaven-- published October 23

I just read in one of my inspirational daily e-mails about a Harvard Neurosurgeon who wrote a book called "Proof of Heaven", it's about his near death experience, and how he visited heaven. He says that although he is a Christian and has been a church goer,  He has always been able to explain away people's near death experiences of the after life/heaven with scientific facts of how the brain works and how these experiences are functions of the brain rather than a true journey to heaven. Until he himself was in a coma for 7 days and that there is no way with the way his brain was damaged that his experience could be anything other than a real journey to Heaven. He says that he was always the skeptic and now he is certain of Heaven.
At the end of the article it says that Dr. Eben Alexander's book --Proof Of Heaven: A Neurosurgeon's  Journey in to The After Life will be published on October 23, 2012