Lemma1                  Conditional expectation with respect to
                        Dirichlet process prior
NPBayes                 Nonparametric Bayes estimate of CDF from
                        arbitrary censored data
NPBayesT                Nonparametric Bayes estimate of CDF from left
                        truncated, right censored data
NewLemma1               Conditional Expectation of left truncated and
                        right censored observations