Schedule 20 [O5-1-5] 新型コロナウイルス感染症の流行が子どもの言語発達に与えた影響の検証 *Chinatsu Matsushita1,2, Akira Takagi2, Hatoko Sasaki2, Eiji Nakatani2 (1. fujieda city office, 2. Shizuoka Graduate School of Public Health ) Abstract password authentication.The password has been sent to all participants in advance. Password Authentication