Article 3 adult 3 aged female 3 human 3 male 3 body mass 2 controlled study 2 major clinical study 2 25 hydroxyvitamin D 1 COVID-19 1 Geriatric Nutritional Risk Index 1 RNA purification 1 SARS-CoV-2 1 adolescent 1 age 1 aged hospital patient 1 alanine aminotransferase 1 alanine aminotransferase blood level 1 albumin 1 albumin blood level 1 aldosterone 1 aldosterone blood level 1 androstenedione 1 androstenedione blood level 1 area under the curve 1 aspartate aminotransferase 1 aspartate aminotransferase blood level 1 assay 1 biological marker 1