def split_seperate_me(out_df, in_order=["patient", "compartment"]):
    """Helper for creating biobank compatible dataframes.
    splits a column 'seperate_me' with OVCA12-compartment
    into seperate patient and compartment columns"""
    split = [x.split("-") for x in out_df["seperate_me"]]
    return out_df.assign(
        **{x: [y[ii] for y in split] for (ii, x) in enumerate(in_order)}
    ).drop("seperate_me", axis=1)