Defining global thresholds for anaemia: a challenging mission

Affiliations

• ¹ Wolfson Institute of Population Health, Queen Mary University of London, London, UK. Electronic address: j.daru@qmul.ac.uk.
• ² Clinical Biostatistics Unit, Hospital Ramon y Cajal (IRICIS-CIBERESP), Madrid, Spain; Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK.