Gu, Todorov, Rao (1996), “Combining extremely concordant sibpairs with extremely discordant sibpairs provides a cost effective way to linkage analysis of QTL”, Genetic Epidemiology, 13:513-533.
Gu, Rao (1997), “A linkage strategy for detection of human quantitative-trait loci: I. Generalized relative risk ratios and power of sib pairs with extreme trait values”,. American Journal of Human Genetics, 61(1):200-210
Gu, Rao (1997), “A linkage strategy for detection of human quantitative-trait loci: II. Optimization of study designs based on extreme sib pairs and generalized relative risk ratios”, American Journal of Human Genetics, 61(1):211-222