Instruct: Classify Amazon reviews into positive or negative sentiment
Query: All PNH patients should read this

I have PNH, and was stunned to find a book about my rare disease. This book does not go into great detail of living with PNH on a daily, weekly, monthly or yearly basis. Dr. Biro was fortunate enough to have a perfect match for his Bone Marrow Transplant. This book tells of his story through the BMT process, which I think is good for any one to read if they may have to have a BMT. It really explained a lot to me. Any one with PNH, would benenfit from reading his book. And it helps all of us with PNH to know there is a chance of a successful ending to PNH.