foreach $item (@{$clusters}) {
	$ID = $units[$i][0];

	$query = "select * from finalLevel3 where id=\"$ID\";";
	$sth = $dbh -> prepare($query);
	$sth -> execute;
	@row = $sth -> fetchrow_array;

	# convert the mysql result back to a string again
	$promoter_line = join "\t", @row;
	$promoter_line .= "\n";
	
	$parser_hash{$item} .= $promoter_line;
	$i++;
}