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Levels of NTproBNP, EVF, NTproBNP/EVF and NTproBNP/eGFR on four timepoints. One extreme outlier on the peripartum measurement (with fever during vaginal delivery but no hypertensive disease) with NTproBNP 990 ng/L. eGFR, estimated glomerular filtration rate; EVF, erythrocyte volume fraction; NTproBNP, N-terminal pro-brain natriuretic peptide.
