1 Brown , S , Kim , M , Mitchell , C , Inskip , H . Twenty-five year mortality of a community cohort with schizophrenia . Br J Psychiatry 2010 ; 196 : 116 –21.

2 Royal College of Physicians, Royal College of Psychiatrists . Smoking and Mental Health: A Joint Report by the Royal College of Physicians and the Royal College of Psychiatrists . Royal College of Physicians , 2013 .

3 Szatkowski , L , McNeill , A . Diverging trends in smoking behaviors according to mental health status . Nicotine Tob Res 2014 ; 17 : 356 –60.

4 Craig , P , Dieppe , P , Macintyre , S , Michie , S , Nazareth , I , Petticrew , M . Developing and evaluating complex interventions: the new Medical Research Council guidance . BMJ 2008 ; 337 : a1655 .

5 Gilbody , S , Peckham , E , Man , M-S , Mitchell , N , Li , J , Becque , T , et al. Bespoke smoking cessation for people with severe mental ill health (SCIMITAR): a pilot randomised controlled trial . Lancet Psychiatry 2015 ; 2 : 395 – 402 .

6 Gilbody , S , Peckham , E , Bailey , D , Arundel , C , Heron , P , Crosland , S , et al. Smoking cessation for people with severe mental illness (SCIMITAR+): a pragmatic randomised controlled trial . Lancet Psychiatry 2019 ; 6 : 379 –90.

7 Peckham , E , Brabyn , S , Cook , L , Tew , G , Gilbody , S . Smoking cessation in severe mental ill health: what works? an updated systematic review and meta-analysis . BMC Psychiatry 2017 ; 17 : 252 .

8 McEwen , A , Hajek , P , McRobbie , H , West , R . Manual of Smoking Cessation: A Guide for Counsellors and Practitioners . Blackwell Publishing , 2006 .

9 Banham , L , Gilbody , SM . Smoking cessation in severe mental illness: what works? Addiction 2010 ; 105 : 1176 –89.

10 Lancaster , GA , Dodd , S , Williamson , PR . Design and analysis of pilot studies: recommendations for good practice . J Eval Clin Pract 2004 ; 10 : 307 –12.