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Stang A, Jöckel KH.Stang A, et al. Among authors: jockel kh.Ann Epidemiol. 2003 Jul;13(6):436-42. doi: 10.1016/s1047-2797(03)00002-4.Ann Epidemiol. 2003.PMID: 12875802
Kreuzer M, Krauss M, Kreienbrock L, Jöckel KH, Wichmann HE.Kreuzer M, et al. Among authors: jockel kh.Am J Epidemiol. 2000 Feb 1;151(3):241-50. doi: 10.1093/oxfordjournals.aje.a010199.Am J Epidemiol. 2000.PMID: 10670548
Stang A, Anastassiou G, Ahrens W, Bromen K, Bornfeld N, Jöckel KH.Stang A, et al. Among authors: jockel kh.Epidemiology. 2001 Jan;12(1):7-12. doi: 10.1097/00001648-200101000-00003.Epidemiology. 2001.PMID: 11138823