@article{abdrabboalyafei2022association,
  author = {Najat Abdrabbo AlYafei and Bushra Naaz Fathima Jaleel and Abdel-Salam G. Abdel-Salam and Hamda Ali Al-Saadi and Samya Ahmad Al Abdulla},
  title = {Association of Serum Vitamin D level and COVID-19 infection: A Case-control Study},
  year = {2022},
  journal = {Qatar Medical Journal},
  volume = {2022},
  number = {4},
  publisher = {Hamad bin Khalifa University Press (HBKU Press)},
  doi = {10.5339/qmj.2022.48}
}