Article History
Received: 20 February 2020
Accepted: 20 May 2020
First Online: 29 June 2020
Compliance with ethical standards
:
: The authors declare that there are no conflicts of interest.
: The study design was approved by the Medical Ethics Committee of Liuzhou People’s Hospital (grant no. 2020[KY-E-02-1]).
: Informed consent was obtained from all individual participants included in the study.