1 Population Health and Immunity Division and World Health Organization Collaborating Centre for Anaemia Detection and Control, Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia; Diagnostic Haematology, The Royal Melbourne Hospital, Parkville, VIC, Australia; Clinical Haematology, The Peter MacCallum Cancer Centre and The Royal Melbourne Hospital, Parkville, VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, VIC, Australia.
2 Department of Nutrition and Food Safety, World Health Organization, Geneva 1202, Switzerland.
3 Department of Nutrition and Food Safety, World Health Organization, Geneva 1202, Switzerland. Electronic address: garciacasalm@who.int.