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. 2021 Mar 29;10:62. doi: 10.1186/s13756-021-00928-5

Fig. 1.

Fig. 1

Flow chart of patient inclusion. A total of 257,984 inpatients were admitted to the hospital. After data collation and screening, finally 3079 inpatients with HAI and 212,259 inpatients without HAI were included. This study included 4 cohorts, including cohort-RBCs, cohort-FFPs, cohort-cryo and cohort-platelets