About the Authors
Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
HIV Drug Resistance Program, National Cancer Institute-Frederick, Frederick, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: PJ JMC. Performed the experiments: PJ RAR JMC. Analyzed the data: PJ JMC. Contributed reagents/materials/analysis tools: PJ RAR VP JMC. Wrote the paper: PJ RAR VP JMC.