Poddębniak , Justyna, Beata Zielnik-Jurkiewicz, and Marta Nadzikiewicz. “Nickel Allergy in Children Orthodontic Treatment ? Still Valid Problem”. Alergoprofil 12, no. 3 (September 30, 2016): 129-134. Accessed May 30, 2026. https://www.journalsmededu.pl/index.php/alergoprofil/article/view/870.