Funding for this research was provided by:
Beijing Municipal Science & Technology Commission (Z161100000516007)
Received: 20 July 2018
Accepted: 14 November 2018
First Online: 18 January 2019
: Research Ethical Committees of Beijing Hospital of Traditional Chinese Medicine Affiliated to Capital Medical University, Dongzhimen Hospital, Beijing Friendship Hospital, Huguosi Hospital of Chinese Medicine and Dongfang Hospital. Written informed consent will be obtained from patients prior to enrolment in the study.
: The authors declare that they have no competing interests.
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