Ying, Xiaowu
Tian, Kaiyue
Zhang, Kaiyu
Ma, Xiaohui
Guo, Hongming
Funding for this research was provided by:
Beijing Science and Technology Committee (Z171100001017046, Z171100001017046)
‘Beijing Hospitals Authority’ Ascent Plan (DFL20191501, DFL20191501)
Article History
Received: 28 June 2021
Accepted: 6 October 2021
First Online: 15 October 2021
Declarations
:
: This was a retrospective study using the existing radiographic materials and was approved by the Ethical Committee of the School of Stomatology, Capital Medical University (Beijing, China#CMUSH-IRB-KJ-PJ-2021-05).
: Not applicable.
: The authors declare that they have no competing interests.