- Correspondence to Dr Srinivasa Vittal Katikireddi, Evaluation of Social Interventions Programme, MRC/CSO Social and Public Health Sciences Unit, 4 Lilybank Gardens, Glasgow G12 8RZ, UK;
- Received October 14, 2012
- Revised January 31, 2013
- Accepted February 17, 2013
- First published March 13, 2013.
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