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. Author manuscript; available in PMC: 2019 Aug 7.
Published in final edited form as: Prev Med. 2018 Apr 24;117:98–106. doi: 10.1016/j.ypmed.2018.04.026

Fig. 1.

Fig. 1.

The main purchasing screen of the ETM showing all products available, relevant information, and pricing. The type and brand of conventional cigarette and e- liquid is customizable based on participant preferences.