Your search returned the following 4 documents:

4. Mutations in gp41 are correlated with coreceptor tropism but do not improve prediction methods substantially
   Alexander Thielen, Thomas Lengauer, Luke C Swenson, Winnie W.Y. Dong, Rachel A McGovern, Marilyn Lewis, Ian James, Jayvant Heera, Hernan Valdez, and P Richard Harrigan
   Antiviral Therapy 16 (3): 319-328, 2011
   
3. Genotypic determination of HIV-1 tropism in the clinical setting
   Luke C. Swenson, Richard Boehme, Alexander Thielen, Rachel A. McGovern, and P. Richard Harrigan
   HIV Therapy 4 (3): 293-303, 2010
   
2. Mutations within GP41 are correlated with coreceptor tropism but do not substantially improve coreceptor usage prediction
   Alexander Thielen, Thomas Lengauer, P Richard Harrigan, Luke Swenson, Winnie WY Dong, Rachel A McGovern, Marilyn Lewis, Ian James, Jayvant Heera, and Hernan Valdez
   In: Reviews in Antiviral Therapy & Infectious Diseases, Sorrento, Italy, 2010, 47-47
   
1. Population-based V3 genotypic tropism assay: a retrospective analysis using screening samples from the A4001029 and MOTIVATE studies
   Rachel A McGovern, Alexander Thielen, Theresa Mo, Winnie Dong, Conan K Woods, Douglass Chapman, Marilyn Lewis, Ian James, Jayvant Heera, Hernan Valdez, and P Richard Harrigan
   AIDS 24 (16): 2517-2525, 2010