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Wilkening A, Zeschky M, Ziegenbein M, Pfefferer-Wolf H, Harms E, Lübbe G, Bläsing R, Albert M, Machleidt W, Calliess IT.Wilkening A, et al. Among authors: machleidt w.Wien Klin Wochenschr. 2007;119(21-22):654-62. doi: 10.1007/s00508-007-0895-z.Wien Klin Wochenschr. 2007.PMID: 18043886German.