Pratummas, Parama, et al. “No Correlation Between Fagerstrom Test for Nicotine Dependence Scores to Lipopolysaccharide Marker in Thai Smokers”. International Journal on Advanced Science, Engineering and Information Technology, vol. 11, no. 5, Oct. 2021, pp. 1986-92, doi:10.18517/ijaseit.11.5.15999.