Cite
HARVARD Citation
Ampikaipakan, S. et al. (2011). Vitamin D and COPD: seasonal variation is important. Thorax. 66 (6), pp. 541-542. [Online].
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Ampikaipakan, S. et al. (2011). Vitamin D and COPD: seasonal variation is important. Thorax. 66 (6), pp. 541-542. [Online].