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.