Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Kelly, James E. and Sanchez, Marcus J. and Van Kirk, Lawrence E.","An assessment of the occlusion of the teeth of children 6-11 years, United States : estimates of the distribution of selected major components of occlusion among children; the prevalence of degrees of malocclusion; the average treatment priority index per child by age, sex, race, family income, parent's education, and region of residence; and a brief analysis of the relationship of occlusal status with thumbsucking and a reported need for orthodontic care",,"National Center for Health Statistics,For sale by the Superintendent of Documents, U.S. Government Printing Office",1973,DHEW publication,,,,https://cir.nii.ac.jp/crid/1130282272612899200