Hanioka T, Haresaku S, Suzuki N, Shimada K, Watanabe T, Ojima M, Fujiie K, Watanabe M. A Natural Experiment for Inferring Causal Association between Smoking and Tooth Loss: A Study of a Workplace Contemporary Cohort. ijsmr [Internet]. 2015 Nov. 2 [cited 2024 Nov. 22];4(4):331-6. Available from: https://mail.lifescienceglobal.com/pms/index.php/ijsmr/article/view/3226