Video:
http://www.ehow.co.uk/video_4784676_smoking-cause-stomach-cancer_.html
Picture:
http://www.google.ca/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Nitrosamine-2D.png/220px-Nitrosamine-2D.png&imgrefurl=http://www.righthealth.com/topic/nitrosamines&usg=__CFKO9QK5qFcSvDQBjfN4UC0IpSk=&h=205&w=220&sz=6&hl=en&start=0&sig2=GivsphyRZ5aXh0q3-xdBrA&zoom=1&tbnid=TFnIYu6M3Ry2qM:&tbnh=138&tbnw=153&ei=pay4TffHK4220QGNpNwC&prev=/search%3Fq%3Dnitrosamines%26um%3D1%26hl%3Den%26biw%3D1907%26bih%3D857%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=157&vpy=387&dur=2713&hovh=164&hovw=176&tx=75&ty=89&page=1&ndsp=50&ved=1t:429,r:20,s:0
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