4Barss P, Nagelkerke N. A compmison of four statistics texts, basic statistics for the health sciences, medical statistics at a glance, statis- tics at square one, and statistics at square two[J]. Emirates Medical Journal, 2005, 22(5) : 87-89.
5Guo Zheng, Li Xia, Rao Shaoqi, et al. Multivariate sib-pair linkage analysis of longitudinal phenotypes by three stepwise analysis approaches[J]. BMC Genetics, 2003, 4(1): 17.