How to read my vitamin D results in my blood test results? Also, is vitamin D 3000-4000 units a day safe for older adults that are in heart medication and other meds -
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Nutrients | Free Full-Text | Temporal Association of Reduced Serum Vitamin D with COVID-19 Infection: Two Single-Institution Case–Control Studies
Lower serum 25(OH)D levels associated with higher risk of COVID-19 infection in U.S. Black women | PLOS ONE
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