The information in this patient summary was taken from the health professional version, which is reviewed regularly and updated as needed, by the PDQ Integrative, Alternative, and Complementary Therapies Editorial Board.
A clinical trial is a study to answer a scientific question, such as whether one treatment is better than another.
They are not policy statements of the NCI or the NIH.
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients.
Many cancer doctors who take part in clinical trials are also listed in PDQ.
For more information, call the Cancer Information Service 1-800-4-CANCER (1-800-422-6237). The content of PDQ documents can be used freely as text. [PMID: 26389281] Images in this summary are used with permission of the author(s), artist, and/or publisher for use in the PDQ summaries only.
The summaries are reviewed regularly and changes are made when there is new information.
The date on each summary ("Date Last Modified") is the date of the most recent change.