Shi, Xin
Guan, Xingfa
Article History
Received: 17 June 2019
Accepted: 11 September 2019
First Online: 24 October 2019
Ethics approval and consent to participate
: A signed written informed consent was obtained from each patient and the experimental procedures were all in accordance with the guideline of the Ethics Committee of Qilu Hospital Huantai Branch.
: Written informed consent for publication was obtained from each participant.
: The authors declare that they have no competing interests.