Big Mac index of cigarette affordability.
Lal
A
A
Scollo
M
M
D003132:Commerce / Q000191:economics*; D003431:Cross-Cultural Comparison; D004467:Economics; D006801:Humans; D012907:Smoking / Q000191:economics*; D000074606:Smoking Prevention; D013660:Taxes / Q000191:economics*