Funding for this research was provided by:
the Anhui Provincial Natural Science Foundation (1608085MH215)
the Key Project of the Natural Science Foundation Universities Anhui Province (KJ2019A0319,KJ2016A475)
the Natural Science Foundation of Universities in Anhui Province (KJ2013B139)
the Postgraduate Science and Technology Innovation Project of Bengbu Medical College in Anhui Province (Byycx1824)
the Undergraduate Training Programs for Innovation and Entrepreneurship in Anhui Province (201810367017, and 201810367056)
Received: 30 January 2020
Revised: 12 May 2020
Accepted: 2 June 2020
First Online: 15 June 2020
Compliance with ethical standards
: All participants provided informed written consent. This study was approved by the institutional review board of the First Affiliated Hospital of Bengbu Medical College.
: The authors declare no financially oriented conflicts of interest. Ethical approvals and informed written consent were obtained and provided from and to all participants. The study design was approved by the Institutional Review Board of the First Affiliated Hospital of Bengbu Medical College.