Table 3.

Keywords and search phrases

n#	Keywords and Search Terms
1	“Medical issues” and “Deep learning”
2	“Healthcare” and “Machine learning”
3	“COVID-19” and “Deep learning”
4	“COVID-19” and “Machine learning” and
5	“Artificial intelligence COVID-19” or “AI methods covid-19”
6	“Epidemic diseases” and “Deep transfer learning”
7	“COVID-19 disease” and “Transfer learning”