S V Subramanian, Shailen Nandy, Michelle Kelly, Dave Gordon, George Davey Smith
Subramanian S V, Nandy S, Kelly M, Gordon D, Smith G D.
Patterns and distribution of tobacco consumption in India: cross sectional multilevel evidence from the 1998-9 national family health survey
BMJ 2004; 328 :801
doi:10.1136/bmj.328.7443.801