TY - JOUR AU - Ng, M TI - Smoking prevalence and cigarette consumption in 187 countries, 1980-2012 JO - JAMA VL - 311 PY - 2014 DO - 10.1001/jama.2013.284692 L3 - PubMed-ID: 24399557 SP - 183 EP - 192 N1 - et al. ER -