مطالعات بالینی و اپیدمیولوژیک را می توان به مطالعات مداخله ای و مشاهده ای متمایز کرد. مطالعات مداخله ای مستقیماً در زندگی شرکت کنندگان در مطالعه مداخله می کند. برخی از شرکت کنندگان در مطالعه یک "مداخله" دریافت می کنند، که می تواند، برای مثال، یک دارو یا روش جراحی جدید باشد.
مطالعات بالینی و اپیدمیولوژیک را می توان به مطالعات مداخله ای و مشاهده ای متمایز کرد. مطالعات مداخله ای مستقیماً در زندگی شرکت کنندگان در مطالعه مداخله می کند. برخی از شرکت کنندگان در مطالعه یک "مداخله" دریافت می کنند، که می تواند، برای مثال، یک دارو یا روش جراحی جدید باشد.
"The result is on this photo: fiery 'greetings' to the invaders," the Security Service of Ukraine wrote alongside a photo showing several military vehicles among plumes of black smoke. Soloviev also promoted the channel in a post he shared on his own Telegram, which has 580,000 followers. The post recommended his viewers subscribe to "War on Fakes" in a time of fake news. Update March 8, 2022: EFF has clarified that Channels and Groups are not fully encrypted, end-to-end, updated our post to link to Telegram’s FAQ for Cloud and Secret chats, updated to clarify that auto-delete is available for group and channel admins, and added some additional links. But Telegram says people want to keep their chat history when they get a new phone, and they like having a data backup that will sync their chats across multiple devices. And that is why they let people choose whether they want their messages to be encrypted or not. When not turned on, though, chats are stored on Telegram's services, which are scattered throughout the world. But it has "disclosed 0 bytes of user data to third parties, including governments," Telegram states on its website. Telegram was founded in 2013 by two Russian brothers, Nikolai and Pavel Durov.
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