1. Namazova-Baranova LS, Makarova SG, Studenikin VM. Vitaminy i mineral’nye veshchestva v praktike pediatra. Federal State Autonomous Institution “Scientific Center for Children’s Health” of the Russian Ministry of Health; Union of Pediatricians of Russia. Moscow: Pediatr; 2016. 299 p. (In Russ).
2. Natsional’naya programma po optimizatsii obespechennosti vitaminami i mineral’nymi veshchestvami detei Rossii (i ispol’zovaniyu vitaminnykh i vitaminno-mineral’nykh kompleksov i obogashchennykh produktov v pediatricheskoi praktike). Union of Pediatricians of Russia. Moscow: Pediatr; 2017. 152 p. (In Russ).
3. Markova IV, Kalinicheva VI. Pediatricheskaya farmakologiya: Guide for doctors. 2nd ed., revised and additional. Leningrad: Meditsina; 1987. 495 p. (In Russ).
4. Wintergerst ES, Maggini S, Hornig DH. Contribution of selected vitamins and trace elements to immune function. Ann Nutr Metab. 2007;51(4):301–323. doi: https://doi.org/10.1159/000107673 5. Domellöf M, Braegger C, Campoy C, et al. Iron requirements of infants and toddlers. J Pediatr Gastroenterol Nutr. 2014;58(1):119– 129. doi: https://doi.org/10.1097/MPG.0000000000000206
5. Ladodo KS, Druzhinina LV. Detskoe pitanie: ot rozhdeniya do goda. Moscow: Labirint press; 2007. 237 p. (In Russ). 7. Diagnostika i lechenie zhelezodefitsitnoi anemii u detei i podrostkov: Manual for doctors / Rumyantsev AG, Zakharovai IN, eds. Moscow; 2014. 76 p. (In Russ).