[용어속성] Term

Secondary infection in COVID-19 critically ill patients: a retrospective single-center evaluation

COVID-19 중환자 환자의 2 차 감염 : 후 향적 단일 센터 평가

Observational Study

Real-world serological responses to extended-interval and heterologous COVID-19 mRNA vaccination in frail, older people (UNCoVER): an interim report from a prospective observational cohort study

Observational Study