Effect of unguided e cigarette provision on uptake, use, and smoking cessation among adults who smoke in the USA: a naturalistic, randomised, controlled clinical trial eClinicalMedicine Frontiers The efficacy and acceptability of pharmacological monotherapies and e cigarette on smoking cessation: a systemic review and network meta analysis Unboxing old lighters [1950s to 1920s] , ., ., ., ., ., #collection #lighters #oldisgold #design Effectiveness of a chat bot for the adult population to quit smoking: protocol of a pragmatic clinical trial in primary care (Dejal@) BMC Medical Informatics and Decision Making Springer Nature Link