Artifactual production of cyanide from coffee and tea drinks in the presence of nitrite Yasuo Seto, Takeshi Ohmori, Mieko Kanamori-Kataoka, Kouichiro Tsuge, Isaac Ohsawa and Shintaro Kishi Ann Toxicol Anal, 20 3 (2008) 155-160 Published online: 19 March 2009 DOI: 10.1051/ata/2009013