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อ้างอิง 1. Morris G, William B. Outbreak of Sodium Nitrite Poisoning, American Journal of Public Health 1944; 35: 1217-20. 2. Ann Kaplan, et al. Methemoglobinemia due to accidental sodium nitrite poisoning. S Afr med J. 1990; 300-1. 3. Osvaldo Matteucci, et al. Two case of Methemoglobinemia caused by suspected sodium nitrite poisoning. Vet Ital j 2008; 44 (2): 447-53. 4. W.J gowas. Fetal methemoglobinemia in a dental nurse, a case of sodium nitrite poisoning. British journal of general practice, November 1990: 470-2.