Hillier, F. C., Batterham, A. M., Nixon, C. A., Crayton, A. M., Pedley, C. L., & Summerbell, C. D. (2012). A community-based health promotion intervention using brief negotiation techniques and a pledge on dietary intake, physical activity levels and weight outcomes: lessons learnt from an exploratory trial. Public Health Nutrition, 15(8), 1446-1455. https://doi.org/10.1017/s1368980011002862