| Recruiting | N/A | 250 | RoW | CO-rebreathing, Oral iron isotope administration (54Fe), Intravenous iron isotope administration (58Fe) | University of Oxford, Columbia University, Jomo Kenyatta University of Agriculture and Technology, Msambweni County Referral Hospital, ETH Zurich | Iron Requirements, Pregnancy, Lactation, Infancy, Iron Absorption | 06/26 | 09/26 | | |