lbrat.SSD.All()
LBRAT test or RGMMAT test using SSD format files
lbrat_est.gee()
GEE NULL model estimation
lbrat_est.glmm()
GLMM NULL model estimation
lbrat_read_phe()
Read in Phenotype and Genotype Files
lbrat_simu()
Simulation for LBRAT test
lbrat_test()
Calculate prospective and retrospective P-values for GEE or GLMM model