DVD of a lecture by Dr. Kohei Yamaguchi of Tokyo University of Science, hosted by the Association of Visiting Dentistry. I learned a lot about the involvement of dentistry in dysphagia rehabilitation, multidisciplinary collaboration, and more. One DVD, with materials; the materials have creases from being scanned. Although it was new at the time of purchase, please understand that this is a used item as it has been handled by people. The condition is based on subjective judgment, so please understand.