BibTex format
@article{Chen:2021:ntr/ntab084,
author = {Chen, DT-H and Girvalaki, C and Mechili, EA and Millett, C and Filippidis, FT},
doi = {ntr/ntab084},
journal = {Nicotine and Tobacco Research},
pages = {1816--1820},
title = {Global patterns and prevalence of dual and poly-tobacco use: a systematic review},
url = {http://dx.doi.org/10.1093/ntr/ntab084},
volume = {23},
year = {2021}
}