Cigarette pack messages about toxic chemicals: a randomised clinical trial
Noel T Brewer, Michelle Jeong, Jennifer R Mendel, Marissa G Hall, Dongyu Zhang, Humberto Parada Jr, Marcella H Boynton, Seth M Noar, Sabeeh A Baig, Jennifer C Morgan, Kurt M Ribisl
Tobacco Control Jan 2019, 28 (1) 74-80; DOI: 10.1136/tobaccocontrol-2017-054112