Kloepfer, Korinna, Pirmin Schmid, Walter A. Wuillemin, and Axel Rüfer. “Reference Values for Oral Iron Absorption of Bivalent Iron in Healthy Volunteers”. Swiss Medical Weekly 144, no. 5152 (January 11, 2015): w14063. Accessed August 22, 2024. https://smw.ch/index.php/smw/article/view/1951.