Hoddinott , P , Morgan , H , MacLennan , G , Sewel , K , Thomson , G , Bauld , L , Yi , D , Ludbrook , A & Campbell , M K 2014 , ' Public acceptability of financial incentives for smoking cessation in pregnancy and breast feeding : a survey of the British public ' BMJ Open , vol. 4 , no. 7 , e005524 . https://doi.org/10.1136/bmjopen-2014-005524