National guidelines and level of evidence: comments on some of the new recommendations in the American Society of Clinical Oncology and the College of American Pathologists human epidermal growth factor receptor 2 guidelines for breast cancer
1 Nottingham University Hospitals NHS Trust; University of Nottingham, Nottingham City Hospital, Nottingham, United Kingdom emadrakha@yahoo.com Emad.rakha@nuh.nhs.uk.
2 Nottingham University Hospitals NHS Trust; University of Nottingham, Nottingham City Hospital, Nottingham, United Kingdom.
3 St James University Hospital, Leeds, United Kingdom.