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Thomas E, Enders-Ruckle G, Geursen RG.Thomas E, et al. Among authors: geursen rg.Klin Padiatr. 1985 Sep-Oct;197(5):415-8. doi: 10.1055/s-2008-1034013.Klin Padiatr. 1985.PMID: 2999501German.
Hiller E, Holler E, Geursen RG, Riess H.Hiller E, et al. Among authors: geursen rg.Blut. 1986 Feb;52(2):123-6. doi: 10.1007/BF00321075.Blut. 1986.PMID: 3081068No abstract available.