Effect of maxillary protraction with or without rapid palatal expansion in treating early skeletal Class Ⅲ malocclusion
MA Wen-sheng1, LU Hai-yan1, DONG Fu-sheng2, HU Xiao-ying1, LI Xing-chao2
West China Journal of Stomatology . 2009, (02): 178 -182 .