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Jepson M, Elliott D, Conefrey C, Wade J, Rooshenas L, Wilson C, Beard D, Blazeby JM, Birtle A, Halliday A, Stein R, Donovan JL; CSAW study group; Chemorad study group; POUT study group; ACST-2 study group; OPTIMA prelim study group.Jepson M, et al.J Clin Epidemiol. 2018 Jul;99:75-83. doi: 10.1016/j.jclinepi.2018.02.018. Epub 2018 Mar 2.J Clin Epidemiol. 2018.PMID: 29505860Free PMC article.