Figure 2

Correlation between sums of As species in urines of eighteen Zimapán residents analyzed in both Cinvestav-IPN and in Universidad Juárez del Estado de Durango (UJED): R = 0.997, p < 0.01).
Correlation between sums of As species in urines of eighteen Zimapán residents analyzed in both Cinvestav-IPN and in Universidad Juárez del Estado de Durango (UJED): R = 0.997, p < 0.01).