We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEvidence for Positive Epistasis in HIV-1.AuthorsBonhoeffer, Sebastian; Chappey, Colombe; Parkin, Neil T.; Whitcomb, Jeanette M.; Petropoulos, Christos J.PublicationScience, 2004, Vol 306, Issue 5701, p1547ISSN0036-8075Publication typearticleDOI10.1126/science.1101786