Qinhong Zhang1, Jinhuan Yue2, Ying Lu3. 1. Department of Acupuncture and Moxibustion, Second Hospital of Heilongjiang University of Chinese Medicine, Harbin, China Department of Health Research and Policy, Stanford University, Stanford, California, USA. 2. Department of Acupuncture and Moxibustion, Second Hospital of Heilongjiang University of Chinese Medicine, Harbin, China. 3. Department of Health Research and Policy, Stanford University, Stanford, California, USA.