Funding for this research was provided by:
the Special Scientific Research Fund of Public Welfare Profession of China (201307004)
Received: 13 April 2018
Accepted: 28 November 2018
First Online: 12 December 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethical approvals have already been granted by ethics committees in all research centers, including the ethics committee of The Rehabilitation Hospital affiliated to Fujian University of Traditional Chinese Medicine (2013KY-006-01, approval received in July 2013), the ethics committee of The First Affiliated Hospital of Henan University of TCM (2014HL010, approval received in March 2014) and the ethics committee of The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine (2013KY-006-01, approval received in March 2014).
: Not applicable.
: All authors declare that they have no competing of interest.
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