Additional file 1: of Factors associated with pneumococcal vaccination in elderly people: a cross-sectional study among elderly club members in Miyakonojo City, Japan SakamotoAkihiro ChanyasanhaCharnchudhi SujiraratDusit MatsumotoNobuhiro NakazatoMasamitsu 2018 Classification of knowledge, perception, and health motivation. (PDF 100 kb)