Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
ROBBINS KE,"U.S. human immunodeficiency virus type 1 epidemic : date of origin, population history, and characterization of early strains",J Virol,,,2003,77,,6359-6366,https://cir.nii.ac.jp/crid/1572261550501895168,