Funding for this research was provided by:
Higher Education Discipline Innovation Project (B08006)
National Natural Science Foundation of China (81473518, 81573824)
Capital Health Research and Development of Special (SF2016–4-4193)
Text and Data Mining valid from 2019-02-28
Received: 30 August 2018
Accepted: 18 February 2019
First Online: 28 February 2019
Ethics approval and consent to participate
: The protocol was approved by Dongzhimen Hospital, Beijing University of Chinese Medicine Institutional Ethics Committee. All procedures performed in this study were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All the patients and responsible caregivers provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.