1.Gender: Any2.Age: 20 and over, under 753. Independent living possible person4.Persons who can reliably answer questions, measure body temperature, and observe health5.Persons who understand this research and complete the consent form6.Persons who have been confirmed negative by PCR test

1.Gender: Any2.Age: 20 and over, under 753. Independent living possible person4.Persons who can reliably answer questions, measure body temperature, and observe health5.Persons who understand this research and complete the consent form6.Persons who have been confirmed negative by PCR test