Vitamin D: 16 ng/mL
Signs and Symptoms that could mean you have Vitamin D Deficiency | PHARMA SYNTH FORMULATIONS LTD.
Preventing vitamin D deficiency during the COVID-19 pandemic: UK definitions of vitamin D sufficiency and recommended supplement dose are set too low | RCP Journals
Vitamin D Deficiency: MedlinePlus
9 vitamin D deficiency symptoms (and 11 high vitamin D foods) | Nebraska Medicine Omaha, NE
Vitamin D deficiency - Wikipedia
Do I Have Vitamin D Deficiency?
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Vitamin D vs. D3: Differences, similarities, and which is better for you
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Vitamin D Deficiency: Causes, Symptoms & Treatment
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Vitamin D Deficiency | NEJM
Vitamin D3 (Cholecalciferol): Benefits, Side Effects & Dosage
Low vitamin D levels independently associated with severe COVID-19 cases, death
Pharmacology of Vitamin D – Aphios
6 Side Effects of Too Much Vitamin D
