Saito Toshiyuki
Department of Oral Health, Unit of Social Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki 852-8588, Japan.
J Evid Based Dent Pract. 2012 Sep;12(3):151-3. doi: 10.1016/j.jebdp.2012.07.003.