1. Wu F, Zhao S, Yu B, et al. A new coronavirus associated with human respiratory disease in China. Nature 2020; 579(7798): 265–269, doi: 10.1038/s41586-020-2008-3.
2.
Rahban M, Stanek A, Hooshmand A, et al. Infection of Human Cells by SARS-CoV-2 and Molecular Overview of Gastrointestinal, Neurological, and Hepatic Problems in COVID-19 Patients. J Clin Med 2021; 10: 4802, doi: 10.3390/JCM10214802.
3.
Burhan E, Dwi Susanto A, Isbaniah F, et al. Pedoman Tatalaksana COVID-19. Edisi 3. Tim Editor: Perhimpunan Dokter Paru Indonesia (PDPI) Perhimpunan Dokter Spesialis Kardiovaskular Indonesia (PERKI) Perhimpunan Dokter Spesialis Penyakit Dalam Indonesia (PAPDI) Perhimpunan Dokter Anestesiologi dan Terapi Intensif Indonesia (PERDATIN) Ikatan Dokter Anak Indonesia (IDAI); 2020 (in Indonesian).
4.
Koziarska-Rościszewska M, Rysz J, Stępień M. High prevalence of vitamin D deficiency and its association with metabolic disorders in elderly patients. Fam Med Prim Care Rev 2017; 19(4): 372–376, doi: 10.5114/FMPCR.2017.70809.
5.
Shaan Z, Alvi Y, Ahmad S, et al. Assessment of Vitamin D deficiency among older adult patients with an orthopaedic fracture and its association with increasing age. Fam Med Prim Care Rev 2019; 21(4): 372–376, doi: 10.5114/FMPCR.2019.90171.
6.
Recommendations abstracted from the American Geriatrics Society Consensus Statement on Vitamin D for Prevention of Falls and Their Consequences. J Am Geriatr Soc 2014; 62(1): 147–152, doi: 10.1111/jgs.12631.
7.
Boettger SF, Angersbach B, Klimek CN, et al. Prevalence and predictors of vitamin D-deficiency in frail older hospitalized patients. BMC Geriatrics 2018; 18(1): 1–6, doi: 10.1186/S12877-018-0919-8.
8.
Lakkireddy M, Goud Gadiga S, Malathi R, et al. Impact of Pulse D Therapy on the Inflammatory Markers in Patients with COVID-19. 2021, doi: 10.21203/RS.3.RS-152494/V1.
9.
Rastogi A, Bhansali A, Khare N, et al. Short-term, high-dose vitamin D supplementation for COVID-19 disease: a randomised, placebo-controlled study (SHADE study). Postgrad Med J 2022; 98(1156): 87–90, doi: 10.1136/POSTGRADMEDJ-2020-139065.
10.
Annweiler C, Beaudenon M, Simon R, et al. Vitamin D supplementation prior to or during COVID-19 associated with better 3-month survival in geriatric patients: extension phase of the GERIA-COVID study. J Steroid Biochem Mol Biol 2021; 213: 105958, doi: 10.1016/j.jsbmb.2021.105958.
11.
Annweiler G, Corvaisier M, Gautier J, et al. Vitamin D Supplementation Associated with Better Survival in Hospitalized Frail Elderly COVID-19 Patients: The GERIA-COVID Quasi-Experimental Study. Nutrients 2020; 12(11): 1–12, doi: 10.3390/NU12113377.
12.
D'Avolio A, Avataneo V, Manca A, et al. 25-Hydroxyvitamin D Concentrations Are Lower in Patients with Positive PCR for SARS-CoV-2. Nutrients 2020; 12(5): 1359, doi: 10.3390/NU12051359.
13.
Meltzer DO, Best TJ, Zhang H, et al. Association of Vitamin D Status and Other Clinical Characteristics with COVID-19 Test Results. JAMA Network Open 2020; 3(9): e2019722–e2019722, doi: 10.1001/JAMANETWORKOPEN.2020.19722.
14.
Maghbooli Z, Sahraian MA, Ebrahimi M, et al. Vitamin D sufficiency, a serum 25-hydroxyvitamin D at least 30 ng/mL reduced risk for adverse clinical outcomes in patients with COVID-19 infection. PLoS ONE 2020; 15(9): e0239799, doi: 10.1371/JOURNAL.PONE.0239799.
15.
Hastie CE, Mackay DF, Ho F, et al. Vitamin D concentrations and COVID-19 infection in UK Biobank. Diabetes Metab Syndr 2020; 14(4): 561–565, doi: 10.1016/j.dsx.2020.04.050.
16.
Kementrian Kesehatan Republik Indonesia. Protokol Tatalaksana COVID-19. 2021:4207807 [cited 14.10.2021]. Available from URL: https://covid19.go.id/storage/app/media/Regulasi/2021/Januari/Final%20SK%20Dirjen%20Juknis%20Vaksinasi%20COVID-19%2002022021.pdf.
17.
Tellioglu A, Basaran S, Guzel R, et al. Efficacy and safety of high dose intramuscular or oral cholecalciferol in vitamin D deficient/insufficient elderly. Maturitas 2012; 72(4): 332–338, doi: 10.1016/J.MATURITAS.2012.04.011.
18.
Tarazona-Santabalbina FJ, Cuadra L, Cancio JM, et al. Vitamin D supplementation for the prevention and treatment of COVID-19: a position statement from the Spanish Society of Geriatrics and Gerontology. Revista Española de Geriatría y Gerontología 2021; 56(3): 177–182, doi: 10.1016/J.REGG.2021.02.001.
19.
Arboleda JF, Urcuqui-Inchima S. Vitamin D Supplementation: A Potential Approach for Coronavirus/COVID-19 Therapeutics? Front Immunol 2020; 11: 1523, doi: 10.3389/FIMMU.2020.01523.
20.
Mohan M, Cherian JJ, Sharma A. Exploring links between vitamin D deficiency and COVID-19. PLoS Pathogens 2020; 16(9), doi: 10.1371/journal.ppat.1008874.
21.
Ghelani D, Alesi S, Mousa A. Vitamin D and COVID-19: An Overview of Recent Evidence. Int J Mol Sci 2021; 22(19), doi: 10.3390/ijms221910559.
22.
Sizar O, Khare S, Goyal A, et al. Vitamin D deficiency. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 [cited 11.05.2022]. Available from URL: https://www.ncbi.nlm.nih.gov/books/NBK532266/.
23.
Czernichow S, Fan T, Nocea G, et al. Calcium and vitamin D intake by postmenopausal women with osteoporosis in France. Curr Med. Res Opin 2010; 26(7), doi: 10.1185/03007995.2010.483658.
24.
Thomas MK, Lloyd-Jones DM, Thadhani RI, et al. Hypovitaminosis D in Medical Inpatients. N Engl J Med 1998; 338(12), doi: 10.1056/NEJM199803193381201.
25.
Gröber U, Kisters K. Influence of drugs on vitamin D and calcium metabolism. Dermatoendocrinol 2012; 4(2), doi: 10.4161/derm.20731.
26.
Amrein K, Sourij H, Wagner G, et al. Short-term effects of high-dose oral vitamin D3 in critically ill vitamin D deficient patients: a randomized, double-blind, placebo-controlled pilot study. Crit Care 2011; 15(2): R104, doi: 10.1186/CC10120.