1.
Lekskulchai V. Urinary nicotine and cotinine concentrations in hand-rolled cigarette smokers, filter cigarette smokers, and passive smokers exposed to ETS. Thai J Toxicol [internet]. 2020 Jun. 4 [cited 2026 Sep. 15];25(2):60. available from: https://li01.tci-thaijo.org/index.php/ThaiJToxicol/article/view/243923