5AI-Jasser NM. Cephalometric evaluation for Saudi population using the Downs and Steiner analysis. J Contemp Dent Pract, 2005,6(2) : 52-63.
6Anderson AA, Anderson AC, Hornbuckle AC, et al. Biological deri- vation of a range of cephalometric norms for children of African Ame- rican descent (after Steiner). Am J Orthod Dentofacial Orthop, 2000,118( 1 ) :90-100.
7Chen J, Zheng H, Bei JX, et al. Genetic structure of the Han Chi- nese population revealed by genome-wide SNP variation. Am J Hum Genet, 2009,85 ( 6 ) : 775-785.
8Downs WB. Variations in facial relationships; their significance in treatment and prognosis. Am J Orthod, 1948,34(10) :812-840.
