1. 1. Longo DL, Kasper DL, Jameson JL, Fauci AS, Hauser SL, Loscalzo J, Eds.Harrison's Principles of Internal Medicine. USA: McGraw Hill New York; 2012:3362.
2. 2. O'Connor J, Bensky D.Acupuncture: A Comprehensive Text. Seattle, WA: Eastland Press; 1981:367–372.