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 Pack e liquides EL GRANDE 10x10 ml Absoluto Exaliquid.fr Efficacy of e cigarettes for smoking cessation in populations with psychiatric and or substance use problems: A secondary analysis of a randomized controlled trial The effect of e cigarettes on smoking cessation and cigarette smoking initiation: An evidence based rapid review and meta analysis