Fig. 3
Chronological line of clinical manifestations in SARS-CoV-2 pneumonia stratified by age groups (< 50 years, 50–75 years, ≥ 75 years)
Fig. 3 | BMC Family Practice
Chronological line of clinical manifestations in SARS-CoV-2 pneumonia stratified by age groups (< 50 years, 50–75 years, ≥ 75 years)