Instruct: Classify a given review into positive or negative sentiment.
Query: Voodoo Medicine!

Dr Sarno's book is great -- for weak-minded, wealthy, narcissists who love to frequent Park Avenue doctors for the purpose of indulging minor ailments. If you've got real pain, then I humbly suggest you see a surgeon not a snake oil salesman. However, the best medicine for what ails you is laughter; and for that I heartily recommend Dan Wagner's FANtastic book: Getting To Howard: The Odyssey of an Obsessed Howard Stern Fan -- it's definitely a pain-free read.