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Ehrenstein V, Heide-Jørgensen U, Schiødt M, Akre O, Herlofson BB, Hansen S, Larsson Wexell C, Nørholt SE, Tretli S, Kjellman A, Glennane A, Lowe KA, Sørensen HT.Ehrenstein V, et al.Cancer. 2021 Nov 1;127(21):4050-4058. doi: 10.1002/cncr.33802. Epub 2021 Jul 26.Cancer. 2021.PMID: 34310704Free article.
Schmidt SA, Heide-Jørgensen U, Manthripragada AD, Ehrenstein V.Schmidt SA, et al.Clin Epidemiol. 2015 Feb 26;7:201-12. doi: 10.2147/CLEP.S77676. eCollection 2015.Clin Epidemiol. 2015.PMID: 25759600Free PMC article.