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. 2020 May 4;7:48. doi: 10.3389/fnut.2020.00048

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Copyright © 2020 Ferrari, Benvenuti, Rossi, De Santis, Sette, Martone, Piccinelli, Le Donne, Leclercq and Turrini.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Percentage contribution of food categories to total intake of selected nutrients (protein, iron, calcium, and vitamin B₁₂) in observed and optimized diet in the male adult population.