2026-01-292026-01-29202110.3390/nu130617602-s2.0-85106218856https://www.scopus.com/inward/record.uri?eid=2-s2.https://ucocris.uco.es/handle/123456789/33386Food ScienceNutrition and DieteticsCalcifediol treatment and hospital mortality due to covid‐19: A cohort studyresearch article