Ключевые слова: adult, caucasian, change, cloud computing, computer network, concept, dangerousflu, database, digital animation, digital technology, digital world, digitally, digitally generated, echo cardiogram, elderly, generated, generated image, global business, global network, healthcare, healthcare concept, heart, heart rate, hospitalization, image, internet connect, male, man, mask, montage, one person, online community, oxygen, oxygen mask, people, rate, real people, senior, senior man, sharing, unconscious, virtual reality,