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 .