NBDev                   Fit a negative binomial GLM for given design
                        matrix
PoisDev                 Compute Poisson deviances (up to a constant)
                        for given design matrix
QL.fit                  Fit quasi-likelihood models to matrix of
                        RNA-seq expression count data
QL.results              Obtain p-values and q-values using results from
                        'QL.fit'
