00441nas a2200157 4500000000100000000000100001008004100002100001700043700001600060700001700076700001600093245014200109300001100251490000700262022001400269 2014 d1 aM. Gulliford1 aJ. Charlton1 aN. Bhattarai1 aC. Rudisill00aSocial and material deprivation and the cost-effectiveness of an intervention to promote physical activity: cohort study and Markov model a674-830 v36 a1741-3842