@staticmethod
def _clean_header(header):
    """Remove ISA-Tab specific information from Header[real name] headers.
        """
    if header.find('[') >= 0:
        header = header.replace(']', '').split('[')[-1]
    try:
        int(header[0])
        header = 'isa_' + header
    except ValueError:
        pass
    return header
