##fileformat=VCFv4.2
##contig=<ID=1,assembly=b37,length=249250621>
##reference=file:///lustre/scratch105/projects/g1k/ref/main_project/human_g1k_v37.fasta
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO
1	3000001	.	A	G	.	.	.
1	4000001	.	A	G	.	.	.
