Instruct: Classify the given Amazon review as either positive or negative.
Query: Important information

I bought this book for a relative who had breast cancer. This book helped her refine her questions about treatment as she met with physicians. It also gave her a much needed information about breast cancer. It was especially helpful in being very clear about what was known for sure about the disease and treatment and what was still unclear. I consider this book a must for anyone with breast cancer or with a family member or friend with breast cancer.