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Description
What is the most effective stop-smoking aid

14-cv-428, C

Design This randomised, double-blind, four-arm, within-subjects study was conducted at the NIHR Wellcome Trust Clinical Research Facility (CRF) at Kings College Hospital, London, UK (randomisation and masking described in Appendix pp2)

Certain groups are particularly sensitive to fine PM2.5 particles, acrolein, and carbon monoxide contained in the smoke of herbal cigarettes

For each question, the respondents were presented again with the four variants of the warnings they had previously viewed

The authors searched the literature, compiling results from 64 studies to answer this question
