The evolutionary position of 2019-nCoV. The phylogenetic tree was constructed based on the complete genomic sequences of 2019-nCoV and related CoVs by using the neighbor-joining (NJ) method with 1000 bootstrap. The novel 2019-nCoV detected strains were indicated in bold with solid squares. Abbreviations are as follows: SARSr coronavirus, SARS-related coronavirus. The accession numbers of CoVs were showed in the figure. Bootstrap values above 50 were shown.