- Correspondence to Dr Jiang Zhu, School of Acupuncture–Moxibustion and Tuina, Beijing University of Chinese Medicine, No. 11 Bei San Huan Dong Lu, Chaoyang District, Beijing 100029, China;
- Received 10 August 2016
- Revised 8 May 2017
- Accepted 9 May 2017
- Published online 18 August 2017.
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