Department;
of;
Stomatology,;
Tongji;
Hospital;
of;
Tongji;
Medical;
College,;
Huazhong;
University;
of;
Science;
and;
Technology,;
Wuhan;
430030;
Department;
of;
Stomatology,;
Tai'an;
City;
Central;
Hospital,;
Tai;
"an;
271000;
Department;
of;
Anesthesiology,;
Tai'an;
City;
Central;
Hospital,;
Tai'an;
271000;