Received: 16 April 2020
Accepted: 21 September 2020
First Online: 11 November 2020
Ethics approval and consent to participate
: This study was conducted in accordance with the Declaration of Helsinki and was approved by the Institutional Review Boards of Cangzhou People’s Hospital. Written informed consent was obtained from individual or guardian participants.
: Not Applicable.
: The authors declared that they have no conflicts of interest to this work.