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.
http://studentedu.farafile.ir/file/22873/پاورپوینت-بیماری-سیفلیس-و-آزمایشهای-تشخیصی-آن-(rpr-و-vdrl)