Gündüz, Mehmet, and Esra Karaaslan. “COVID-19 Reminds Us: Community Vitamin D Deficiency”. Annali Italiani di Chirurgia 91, no. 6 (November 1, 2020): 673–678. Accessed November 24, 2024. https://annaliitalianidichirurgia.it/index.php/aic/article/view/2663.