Funding for this research was provided by:
the Science and Technology Development Plan of Taian city (2019NS131)
the Medical and Health Technology Development Plan of Shandong Province (2016WS0060)
Received: 24 April 2020
Accepted: 27 August 2020
First Online: 3 September 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Taian City Central Hospital, and written informed consent was obtained from the patient.
: Written informed consent for publication was obtained from the patient.
: The authors declare that they have no competing interests.