def crcl_schwartz(height: float, creatinine: float) -> float:
    """ Method returns creatinine clearance using the Schwartz method

    Parameters
    ----------
    height
        height in cm
    creatinine
        serum creatinine value in umol/L

    Returns
    -------
    float
        creatinine clearance
    """

    k = 0.413
    crcl = k * height / (creatinine / 88.42)

    return crcl