The relationship between vitamin D deficiency and mortality in older adults before and during COVID-19 pandemic

ME Durmuş, Ö Kara, M Kara, TC Kaya, FE Şener… - Heart & Lung, 2023 - Elsevier
Background Vitamin D is an essential fat-soluble vitamin thought to be associated with
chronic diseases, mortality and COVID-19. Objective To investigate the association between …