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.
https://123dok.co/document/y8grgm00-st분절-상승-심근경색증-환자에서-시간-지연이-사망률에-미치는.html