Open letter to Simon Stevens to ensure that tobacco dependence treatment is provided for every smoker cared for by the NHS, as part of the long term plan - Goddard, A; Burn, W; Regan, L; Viner, R; Stokes-Lampard, H; Mahajan, R; Anagnostara, E; Hollins, S; Wessely, S; Arnott, D; Cramer, S; Watson, M; et al. (BMJ, 2018)