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Author Title Year Publication Serial (up) Volume Pages
Romano, N.; Vitale, F.; Alesi, D.R.; Bonura, F.; La Licata, R.; Intonazzo, V.; Dardanoni, G.; Mammina, C. The changing pattern of human immunodeficiency virus type 1 infection in intravenous drug users. Results of a six-year seroprevalence study in Palermo, Italy 1992 American Journal of Epidemiology 5258 135 1189-1196
Seyfarth, R.M. A model of social grooming among adult female monkeys 1977 Journal of Theoretical Biology 5259 65 671-698