Age and Ageing volume 43 2014 P. 431. DOI: 10.1093/ageing/afu004
The author has updated the funding statement originally supplied within the article, with the correct statement as follows:
At the time of the research, SVK was funded by the Chief Scientist's Office (SPHSU1) and Medical Research Council (MC_UU_12017/4) as part of the Evaluation of Social Interventions programme at the MRC/CSO Social and Public Health Sciences Unit.
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