Memorial Sloan-Kettering Cancer Center makes no warranties nor express or implied representations whatsoever regarding the accuracy, completeness, timeliness, comparative or controversial nature, or usefulness of any information contained or referenced on this Web site. Memorial Sloan-Kettering does not assume any risk whatsoever for your use of this website or the information contained herein. Health-related information changes frequently and therefore information contained on this Web site may be outdated, incomplete or incorrect. Statements made about products have not been evaluated by the Food and Drug Administration. Use of this Web site does not create an expressed or implied physician-patient relationship.