Association between Average Vitamin D Levels and COVID-19 Mortality in 19 European Countries—A Population-Based StudyAmar Ahmad, R.T.D. Oliver, Nirmin F. Juber et al.|Nutrients|2023Cited by 9
Population based mean Vitamin D levels in 19 European Countries & COVID-19 MortalityAmar Ahmad, R.T.D. Oliver, Christian Heumann et al.|medRxiv|2021Cited by 4
COVID-19-Related Mortality across the Gulf Cooperation Council Countries: Based on Countries’ Available Data Up to November, 2020Amar Ahmad, Raghib Ali, Heba Mamdouh et al.|Asian Journal of Medicine and Health|2021Cited by 0
Population Based Mean Vitamin-D Levels In 19 European Countries & COVID-19 MortalityAmar Ahmad, R.T.D. Oliver, Raghib Ali et al.|Research Square|2021Cited by 0