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AimTo evaluate the associations of serum 25‐Hydroxyvitamin D [25(OH)D] levels with periodontal health and chronic obstructive pulmonary disease (COPD).
Material and MethodsWe conducted a case–control study of 193 COPD patients and 181 controls. Their periodontal status and lung function were examined, and serum 25(OH)D levels were measured.
ResultsMean serum 25(OH)D concentrations were significantly...
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