K. Page-Shafer

Incidence and prognostic significance of symptomatic primary human immunodeficiency virus type 1 infection in homosexual men.

J. Kaldor, M. Schechter, I. Keet, 1997, The Journal of infectious diseases.

Sexual risk behavior and risk factors for HIV-1 seroconversion in homosexual men participating in the Tricontinental Seroconverter Study, 1982-1994.

A R Moss, G J van Griensven, K Page-Shafer, 1997, American journal of epidemiology.