@article{Vassiliou2020, author = {Vassiliou, Alice G. and Jahaj, Edison and Pratikaki, Maria and Keskinidou, Chrysi and Detsika, Maria and Grigoriou, Eirini and Psarra, Katherina and Orfanos, Stylianos E. and Tsirogianni, Alexandra and Dimopoulou, Ioanna and Kotanidou, Anastasia}, doi = {10.1016/j.hjc.2020.11.011}, journal = {Hellenic Journal of Cardiology}, month = {dec}, pages = {381-383}, title = {Vitamin D deficiency correlates with a reduced number of natural killer cells in intensive care unit (ICU) and non-ICU patients with COVID-19 pneumonia}, url = {https://oadoi.org/10.1016/j.hjc.2020.11.011}, volume = {62}, year = {2020} }