def _ci_limits_beta(self, b0, param_num=None):
        return self.test_beta([b0], [param_num])[0] - self.r0
invert genomic coordinates from forward to reverse coordinates and
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/emplike/aft_el.py/OptAFT._ci_limits_beta--crossover with--dataset/ETHPy150Open CGATOxford/cgat/CGAT/GTF.py/Entry.invert