Nicotine, smoke and patches.
Palmer
R
R
Scully
C
C
Felix
D H
DH
D006801:Humans; D009059:Mouth Diseases / Q000473:pathology*; D009538:Nicotine / Q000009:adverse effects*; D010859:Pigmentation Disorders / Q000473:pathology*; D012907:Smoking / Q000009:adverse effects*; D014026:Nicotiana / Q000009:adverse effects*
D009538:Nicotine