printf("SN\ttotal length:\t%ld\n", (long)stats->total_len);
printf("SN\tbases mapped:\t%ld\n", (long)stats->nbases_mapped);
printf("SN\tbases mapped (cigar):\t%ld\n", (long)stats->nbases_mapped_cigar);
printf("SN\ttotal length:\t%ld\n", (long)stats->total_len);
printf("SN\tbases mapped:\t%ld\n", (long)stats->nbases_mapped);
printf("SN\tbases mapped (cigar):\t%ld\n", (long)stats->nbases_mapped_cigar);