add_samples_controlgroup
                        Add a sample to an existing control group
as_control_group        Convert list of nipt samples to nipt control
                        group
bin_bam_sample          Load and bin BAM file
calculate_ncv_score     Use an NCV template to calculate a NCV score
                        for sample of interest
calculate_z_score       Calculate 'standard' Z-score
chi_correct             Performs chi-square based variation reduction
chrfractions            Calculate chromosomal fraction
diagnose_control_group
                        Diagnose control group
gc_correct              Perform a GC bias correction on nipt sample
getcontrolchromosomes   Get control chromosomes names
getfractionscontrolgroup
                        Get all chromosomal fractions of a control
                        group
getreadscontrolgroup    Get reads per chromosome per control group
                        sample
match_control_group     Best matching control group by least sum of
                        squares
perform_regression      Regression based Z score
prepare_ncv             Prepare NCV calculation
remove_duplicates_controlgroup
                        Remove duplicate samples from control group
remove_sample_controlgroup
                        Remove a sample by samplename from control
                        group
retrieve_fractions_of_interest
                        Retrieve the chromosomal fractions of a
                        chromosome of interest
