PT  - JOURNAL ARTICLE
AU  - Sundari N Ampikaipakan
AU  - David A Hughes
AU  - Jackie C Hughes
AU  - Talar Amen
AU  - Graham Bentham
AU  - Andrew M Wilson
TI  - Vitamin D and COPD: seasonal variation is important
AID  - 10.1136/thx.2009.134338
DP  - 2011 Jun 01
TA  - Thorax
PG  - 541--542
VI  - 66
IP  - 6
4099  - http://thorax.bmj.com/content/66/6/541.short
4100  - http://thorax.bmj.com/content/66/6/541.full
SO  - Thorax2011 Jun 01; 66