Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2016HM43)
Medical and Health Science and Technology Development Project of Shandong Province (2016WS0582)
Clinical Medical Science and Technology Innovation Program of the Jinan Science and Technology Bureau (201602303)
Traditional Chinese Medicine Technology Development Plan of Shandong Province (2019-0154)
Received: 3 January 2020
Accepted: 17 February 2020
First Online: 27 February 2020
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.