3Ogaard B, Larsson E, Lindsten R. The effect of sucking habits, co- hort, sex, intercanine widths, and breast or bottle feeding on posterior crossbite in Norwegian and Swedish 3-year-old children. AmJ Orthod Dentofac Orthop, 1994,106 ( 2 ) : 161-166.
8Chen X,Xia B,Ge L.Effects of breast-feeding duration,bottlefeeding duration and non-nutritive sucking habits on the occlusal characteristics of primary dentition[J].BMC Pediatr,2015,15(1):46-54.