Gawarammana IB, Ariyananda PL, Palangasinghe C, De Silva NGL, Fernando K, Vidanapathirana M, Kuruppuarachchi MA, Munasinghe MAAK, Dawson AH. Emerging epidemic of fatal human self-poisoning with a washing powder in Southern Sri Lanka: a prospective observational study. Clinical toxicology. 2009;47:407–411.