| Affiliation: | 1. California Tobacco Prevention Program, California Department of Public Health, Sacramento, CA, USA;2. Center for Tobacco Control Research and Education, University of California San Francisco, CA, USA;3. Division of Oral Epidemiology and Dental Public Health, University of California San Francisco, San Francisco, CA, USA;1. Department of Physiology, Faculty of Medicine, University of Helsinki, Helsinki, Finland;2. Department of Pain Management and Research, Oslo University Hospital, Norway;3. Department of Anesthesiology, Oslo University Hospital, Norway;4. Faculty of Medicine, University of Oslo, Norway |
