Volume 12 13 14 15 16 17 18 Issue 1 2 3 4 Special Issue Keyword Volume 15, Issue 4, October 2021 Characteristics and Secondary Infections among Elderly Patients with COVID-19 Song-I Lee COVID-19 elderly prognosis secondary infection page 309~313 DOI: 10.6890/IJGE.202110_15(4).0003 Download ↓ 90 1 Go to page 1