How much will it cost to send this letter to ? buy finasteride 5mg online uk Groups such as the American Society of Clinical Oncology (ASCO) have developed scores of treatment guidelines for virtually every stage of nearly every kind of cancer. But clinicians’ adoption of the guidelines is not widespread, finds the IOM. Some physicians believe their own experience trumps scientific evidence, others suspect their patients are different from the norm, and still others are simply unaware of treatment guidelines.