avetrteff2              Compute the average subpopulation treatment
                        effect and the standardized average
                        subpopulation treatment effect when two
                        biomarkers are involved
findATE2                Find the cutoff values of biomarkers based on
                        the average subpopulation treatment effect
findSATE2               Find the cutoff values of biomarkers based on
                        the standardized average subpopulation
                        treatment effect
targetDel               Find the difference between the average
                        subpopulation treatment effect and the desired
                        one
targetLam               Find the difference between the standardized
                        average subpopulation treatment effect and the
                        desired one
