论文信息 - Risk of covid-19 related deaths for SARS-CoV-2 omicron (B.1.1.529) compared with delta (B.1.617.2): retrospective cohort study - 字舞流文

Risk of covid-19 related deaths for SARS-CoV-2 omicron (B.1.1.529) compared with delta (B.1.617.2): retrospective cohort study

K. Khunti | J. Hippisley-Cox | A. Walker | T. Yates | O. Gethings | K. Pouwels | V. Nafilyan | D. Ayoubkhani | Isobel L. Ward | A. Banerjee | C. Bermingham | I. Ward