(1)
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 2015, 4, 331-336.