Towards a long-term strategy for voluntary-based internal radiation contamination monitoring: a population-level analysis of monitoring prevalence and factors associated with monitoring participation behavior in Fukushima, Japan - Nomura, S; Tsubokura, M; Ozaki, A; Murakami, M; Hodgson, S; Blangiardo, M; Nishikawa, Y; Morita, T; Oikawa, T (International Journal of Environmental Research and Public Health, 2017)