Hwang, Y. K.; Chun, J. S.; Yoo, P. D.; Ma, J. Y.; Hyun, B. H.; Kim, S. U.; Chang, K. T.; Lee, S. H. Occlusal Reduction of Unilateral Molars Influences Change of Stress-Related Hormones in Rats. Scand J Lab Anim Sci 2004, 31, 73-77.