@article{FeinerSolís:119866,
      author        = "Feiner Solís, Ángela and Avedillo Salas, Ana and Luesma
                       Bartolomé, María José and Santander Ballestín, Sonia",
      title         = "{The Effects of Vitamin D Supplementation in COVID-19
                       Patients: A Systematic Review}",
      year          = "2022",
}