Huynh, U., N. Pal, B.-C. Truong, and M. Nguyen. “A Statistical Profile of Arsenic Prevalence in the Mekong Delta Region”. Thailand Statistician, vol. 19, no. 2, Mar. 2021, pp. 339-60, https://ph02.tci-thaijo.org/index.php/thaistat/article/view/243856.