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Klöppel G, Maurer R, Hofmann E, Lüthold K, Oscarson J, Forsby N, Ihse I, Ljungberg O, Heitz PU.Klöppel G, et al. Among authors: heitz pu.Virchows Arch A Pathol Anat Histopathol. 1991;418(2):179-83. doi: 10.1007/BF01600295.Virchows Arch A Pathol Anat Histopathol. 1991.PMID: 1705067
Chott A, Klöppel G, Buxbaum P, Heitz PU.Chott A, et al. Among authors: heitz pu.Virchows Arch A Pathol Anat Histopathol. 1987;410(5):397-402. doi: 10.1007/BF00712759.Virchows Arch A Pathol Anat Histopathol. 1987.PMID: 3103322
Klöppel G, Heitz PU.Klöppel G, et al. Among authors: heitz pu.Ann N Y Acad Sci. 1994 Sep 15;733:19-23. doi: 10.1111/j.1749-6632.1994.tb17252.x.Ann N Y Acad Sci. 1994.PMID: 7978867Review.No abstract available.
Löhr M, Goertchen P, Nizze H, Gould NS, Gould VE, Oberholzer M, Heitz PU, Klöppel G.Löhr M, et al. Among authors: heitz pu.Virchows Arch A Pathol Anat Histopathol. 1989;414(2):179-85. doi: 10.1007/BF00718598.Virchows Arch A Pathol Anat Histopathol. 1989.PMID: 2492695