COVID-19 screening before gastrointestinal procedures by Ahmed Eliwa, Osman Mohamed Osman, Ahmed Helal, Abdelgawad Saied Mohamed, Mohammed ElFayoumie, Ramadan Eldamarawy, Sadek Mostafa, Ashraf Elsharkawy, Khaled S. Makboul, Salwa I. Elshennawy, Mahmoud Abdelhady, Ashraf Elbahrawy

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