PT  - JOURNAL ARTICLE
AU  - Docherty, Graeme
AU  - McNeill, Ann
TI  - The hardening hypothesis: does it matter?
AID  - 10.1136/tobaccocontrol-2011-050382
DP  - 2012 Mar 01
TA  - Tobacco Control
PG  - 267--268
VI  - 21
IP  - 2
4099  - http://tobaccocontrol.bmj.com/content/21/2/267.short
4100  - http://tobaccocontrol.bmj.com/content/21/2/267.full
SO  - Tob Control2012 Mar 01; 21