Cite
MLA Citation
Peyton Jacob et al.. “Biomarkers of Exposure for Dual Use of Electronic Cigarettes and Combustible Cigarettes: Nicotelline, NNAL, and Total Nicotine Equivalents.” Nicotine & tobacco research, vol. 22, no. 7, 2020, pp. 1107–1113. http://access.bl.uk/ark:/81055/vdc_100116627823.0x000012