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Variation in 25(OH)D levels during supplementation. (A) in patients supplemented with vitamin D3 according to regimen 1, (B) patients supplemented with regimen 2. (C) Proportion of patients with 25(OH)D levels during supplementation in the normal (≥30 ng/mL), insufficient (20–29 ng/mL), and deficient (<20 ng/mL) range. 25(OH)D levels were measured in 81 patients.
