docs: def get_cytoband_coord(chrom, pos):
      """Get the cytoband coordinate for a position
  
          Args:
              chrom(str): A chromosome
              pos(int): The position
  
          Returns:
              cytoband
      """
      chrom = chrom.strip('chr')
      pos = int(pos)
      result = None
      logger.debug("Finding Cytoband for chrom:{0} pos:{1}".format(chrom, pos))
      if chrom in CYTOBANDS:
          for interval in CYTOBANDS[chrom][pos]:
              result = "{0}{1}".format(chrom, interval.data)
  
      return result