Fig. 1
Comparisons of frequencies of adenoid and/or tonsillar hypertrophy by serum 25(OH)D level. Vitamin D-deficient: 25(OH)D < 20 ng/mL; vitamin D-sufficient: 25(OH)D ≥ 20 ng/mL
Fig. 1 | BMC Pediatrics
Comparisons of frequencies of adenoid and/or tonsillar hypertrophy by serum 25(OH)D level. Vitamin D-deficient: 25(OH)D < 20 ng/mL; vitamin D-sufficient: 25(OH)D ≥ 20 ng/mL