Active focus of high prevalence of fogo selvagem on an ameridian reservation in brazil - Hans Filho, G; Santos, V; Katayama, J H; Aoki, V; Rivitti, Evandro Ararigbóia; Sampaio, S. A. P.; Friedman, H; Moraes, J R F; Moraes, M E H; Eaton, D P; Lopez, A L; Hoffman, R G (Journal of Investigative Dermatology, 1996)