The information provided on this website is for educational and informational purposes only, and is not intended as medical advice.  This information should not be used for diagnosing or treating a medical or health condition.  You should always consult a physician or other qualified health care provider for the diagnosis or treatment of any medical or health condition.  Columbia University and the Department of Surgery make no warranties, express or implied, as to the value, usefulness or completeness of any information that is made available on this website.