Mazzei-Abba, Antonella; Folly, Christophe L; Coste, Astrid; Wakeford, Richard; Little, Mark P; Raaschou-Nielsen, Ole; Kendall, Gerald M; Hémon, Denis; Nikkilä, Atte; Spix, Claudia; Auvinen, Anssi; Spycher, Ben D (2020). Epidemiological studies of natural sources of radiation and childhood cancer: current challenges and future perspectives. Journal of radiological protection, 40(1), R1-R23. IOP Publishing 10.1088/1361-6498/ab5a38 Mazzei-Abba, A, Folly, C L, Coste, A, Wakeford, R, Little, M P, Raaschou-Nielsen, O, Kendall, G M, Hémon, D, Nikkilä, A, Spix, C, Auvinen, A & Spycher, B D 2020, ' Epidemiological studies of natural sources of radiation and childhood cancer : current challenges and future perspectives ', Journal of Radiological Protection, vol. 40, no. 1, pp. R1-R23 . https://doi.org/10.1088/1361-6498/ab5a38