Kirchhoff, F., Easterbrook, P. J., Douglas, N., Troop, M., Greenough, T. C., Weber, J., . . . Daniels, R. S. (1999). Sequence Variations in Human Immunodeficiency Virus Type 1 Nef Are Associated with Different Stages of Disease. American Society for Microbiology.

Kirchhoff, Frank, Philippa J. Easterbrook, Nigel Douglas, Maxine Troop, Thomas C. Greenough, Jonathan Weber, Silke Carl, John L. Sullivan, and Rod S. Daniels. Sequence Variations in Human Immunodeficiency Virus Type 1 Nef Are Associated With Different Stages of Disease. American Society for Microbiology, 1999.

Kirchhoff, Frank, et al. Sequence Variations in Human Immunodeficiency Virus Type 1 Nef Are Associated With Different Stages of Disease. American Society for Microbiology, 1999.