哈尔滨市12087名学龄儿童错牙合畸形患病率及影响因素分析
姜玲玲 曹玉慧 刘占帅 汪伟佳 张晓丹 袁杰
An epidemiological investigation of 12087 school children malocclusion in Harbin
. 2019, (10): 931 -935 .