Funding for this research was provided by:
National Key R&D Program of China (2017YFC0840100)
Sichuan Science and Technology Program (2018TJPT0015)
Received: 7 December 2019
Accepted: 10 February 2020
First Online: 17 February 2020
Ethics approval and consent to participate
: The current research was approved by the Ethical Review Committee of West China Hospital of Sichuan University with the committee’s reference number 2017(445) and the registration number is ChiCTR 1800018895. Participants were recruited by convenience and asked verbally by the researchers about their willingness to take part in the study. Before investigation, informed consent was signed and obtained by each participant.
: The authors report no conflicts of interest in this work.