TABLE 1.
Characteristics of subjects from the three communities studied.
| Community | Number and gendera | Age range (median)b |
| Buiuçu | 9F, 6M | 20–44 (28) |
| Puruzinho | 9F, 6M | 23–58 (35) |
| Rio de Janeiro | 10F, 3M | 19–49 (27) |
aF-female; M-male. bIn years.
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