Ottevanger, V., E. Hansen, C. Petersen, and K. Weismann. “Severe Conditioned Zinc Deficiency in Breast-Fed Premature Infants.”. European Journal of Pediatric Dermatology, vol. 4, no. 1, June 2018, pp. 13-16, https://ejpd.com/index.php/journal/article/view/1716.