Human sequence reference

1. Current there a human project hg19 and mean the grch37

2. As I found in google the hg19 is equal the grch37,
    but the hg19 is develop in UCSC
    Reference: UCSC hg19, UCSC_hg19_Statistic

3. And grch37 is develop in the genome reference consortium
    Reference: GRCH37

4.  Ensembl is a European project, but the version I didn't clear
        *Ensembl_Human_Annotation Genbank
        *EnsemblJ_Human_Annotation_GTF
        *Ensembl_FTP_Download_include_FASTA