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Look for small white or gray discs on the ceiling : Most vape detectors resemble a smoke alarm but have no blinking red light

If constructed with a round shank rather than oval, it would be a Liverpool

Finish: Steel case with brushed silver tone or brushed gold tone finishes with two brass tension arms inside

Graham In JAMA (Journal of the American Medical Association) 1950 (volume 143), pages 329-336 Reprinted with commentary in The Journal of NIH Research May 1982 [Curators note: One of the individuals who played a major role in proving a causal association between cigarette smoking and lung cancer was a medical student, Ernst Wynder