Cooperative group for fogo selvagem research - endemic pemphigus foliaceus in western parana, brazil (1976-1988) - Empinotti, J C; Diaz, L A; Martins, Ciro Roberto; Rivitti, Evandro Ararigbóia; Sampaio, S. A. P.; Lombardi, Clovis; Sanches, J A (British Journal of Dermatology, 1990)