FILE PHOTO: Cardiologist Roberto Canessa is seen next to a ventilator developed by him and others that is powered by a motor modeled after a windshield wiper motor, in Montevideo, Uruguay April 9, 2020. REUTERS/Mariana Greif/File Photo

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FILE PHOTO: Cardiologist Roberto Canessa is seen next to a ventilator developed by him and others that is powered by a motor modeled after a windshield wiper motor, in Montevideo, Uruguay April 9, 2020. REUTERS/Mariana Greif/File Photo