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Cinnamon Chocolate "Cigarettes" 3.8 (7) Cookies can be made 2 days ahead and kept in an airtight container

Although CO levels less than 10ppm are traditionally considered to define non-smoking, various studies have found that the figure that marks the cut-off point is around 45ppm.26,29,30 Therefore, any subject who shows CO levels higher than 5ppm should be considered a smoker, providing that the examination has been correctly carried out and all cases of false positive co-oximetry have been ruled out (Table 4)

Chassin L, Presson C, Rose J, Sherman SJ, Prost J

"Musicians' Union Defends Bruce Springsteen Amid Trump Attacks"