Held, E., V. Ottevanger, C.S. Petersen, and K. Weismann. 2018. “Perioral Dermatitis in Children Receiving Budesonide Inhalation Therapy.”. European Journal of Pediatric Dermatology 5 (3):141-4. https://www.ejpd.com/index.php/journal/article/view/1609.