End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
小児ワクチン接種をめぐる現状:世界的な研究者の観点から 小島勢二医師と読む各国からの報告 http://hiroshi39jp.php.xdomain.jp/?p=336382