Association of preoperative anaemia with postoperative morbidity and mortality: an observational cohort study in low-, middle-, and high-income countries

Abstract

Nestlé Health Science to International Surgical Outcomes Study (ISOS); National Institute for Health Research Professorship held by R.M.P. to ISOS; Queen Mary University of London sponsorship to ISOS; Tryg Foundation to L.S.R

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