PT - JOURNAL ARTICLE AU - Omar Hashmi TI - Vitamin B deficiency may increase risk of lung cancer AID - 10.1136/thx.2010.150235 DP - 2011 Jan 01 TA - Thorax PG - 73--73 VI - 66 IP - 1 4099 - http://thorax.bmj.com/content/66/1/73.short 4100 - http://thorax.bmj.com/content/66/1/73.full SO - Thorax2011 Jan 01; 66