TABLE 4.
Origin of the samplesa
| Health center | No | City | Location | Region |
|---|---|---|---|---|
| A | 53 | Lima | Metropolitan Lima | Coast |
| B | 14 | Lima | Metropolitan Lima | Coast |
| C | 12 | Lima | Metropolitan Lima | Coast |
| D | 8 | Lima | Metropolitan Lima | Coast |
| E | 3 | Iquitos | Loreto (Northern Peru) | Jungle |
| F | 2 | Lima | Metropolitan Lima | Coast |
| G | 2 | Piura | Piura (Northern Peru) | Coast |
| ND | 1 | Lima | Metropolitan Lima | Coast |
ND, not determined.