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Heru Susanto, Leu Fang Yie, Fadzliwati Mohiddin, Arief Amier Rahman Setiawan, Parastou Khodaparast Haghi and Desi Setiana
When the world was engulfed by a COVID-19 pandemic crisis, various activities could not be carried out normally. Activities may continue from home during a crisis by the use of a smartphone through the internet, because almost all people have their own s...
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