Instruct: Classify a review into positive or negative sentiment.
Query: A Fantastic Literature Review

Dr. Eriksen has compiled a very impressive collection of research that supports the controversial upper cervical chiropractic philosophy. He leaves no stone unturned as he discusses the anatomy of the region, its biomechanics, and most importantly, the complex neurology of the region in addition to several other topics, all the while providing abstracts of multi-disciplinary research articles from several international publications concerning the topics being discussed. This text is a wealth of scientific knowledge which helps to explain the miracles that upper cervical doctors constantly see in their offices. And Amazon's price cannot be beaten.