d                       Estimate the incremental explained risk
                        variation in a case-control study
dstar                   Estimate the incremental explained risk
                        variation in a case-only study
eh_test_marker          Test for etiologic heterogeneity of risk
                        factors according to individual disease markers
                        in a case-control study
eh_test_subtype         Test for etiologic heterogeneity of risk
                        factors according to disease subtypes in a
                        case-control study
optimal_kmeans_d        Obtain optimal D solution based on k-means
                        clustering of disease marker data in a
                        case-control study
posthoc_factor_test     Post-hoc test to obtain overall p-value for a
                        factor variable used in a 'eh_test_subtype'
                        fit.
subtype_data            Simulated subtype data
