Coats of the former colony of Prata (Pará). Residents have beds to sleep and food. No deals with other activities. They live within these four walls. The National Coordination of Sanitary Dermatology, analyzing annual screening rates for the period 1982 to 1992, concluded that the trend was upward in the country, but the studies that had not allowed to say whether the observed growth was due to factors operational or epidemiológicos14.