Preventive and Social Medicine Prof. Prasert Assantachai and Institute of Geriatric Medicine, MOPH visited NCGG, JapanProf. Prasert Assantachai and Institute of Geriatric Medicie, MOPH visited Fujita Health University, JapanJapan’s National Center for Geriatric and Gerontology Visits Siriraj1 2 3 4