BADEE NEZHAD A, EMAMJOMEH MM, FARZADKIA M, JONIDI JAFARI A, SAYADI M, DAVOUDIAN TALAB AH. Nitrite and Nitrate Concentrations in the Drinking Groundwater of Shiraz City, South-central Iran by Statistical Models. Iran J Public Health. 2017;46(9):1275-1284.