Your search returned the following 3 documents:

3. Improved detection of CXCR4-using HIV by V3 genotyping: application of population-based and "deep" sequencing to plasma RNA and proviral DNA
   Luke C. Swenson, Andrew Moores, Andrew J. Low, Alexander Thielen, Winnie Dong, Conan Woods, Mark A. Jensen, Brian Wynhoven, Dennison Chan, Christopher Glascock, and P. Richard Harrigan
   Journal of Acquired Immune Deficiency Syndromes 54 (5): 506-510, 2010
   
2. Current V3 genotyping algorithms are inadequate for predicting X4 co-receptor usage in clinical isolates
   Andrew J. Low, Winnie Dong, Dennison Chan, Tobias Sing, Ronald Swanstrom, Mark Jensen, Satish Pillai, Benjamin Good, and P. Richard Harrigan
   AIDS 21 (14): F19-F26, 2007
   
1. Improved detection of X4 virus by V3 genotyping: application to plasma RNA and proviral DNA
   Andrew Moores, Alexander Thielen, Winnie Dong, Andrew J. Low, Conan Woods, Mark Jensen, Brian Wynhoven, Dennison Chan, Christopher Glascock, and P Richard Harrigan
   In: Antiviral Therapy, Sitges, Spain, 2008, A99 p.