Coronavirus in HIP Fractures CHIP 2: Is Vitamin D Deficiency Associated with Increased Mortality from COVID-19 Infections in A Hip Fracture Population?

Coronavirus in HIP Fractures CHIP 2: Is Vitamin D Deficiency Associated with Increased Mortality from COVID-19 Infections in A Hip Fracture Population?
Mahmood et al., European Journal of Medical and Health Sciences, doi:10.24018/ejmed.2021.3.6.1159
https://c19early.org/mahmood.html