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Hundeshagen H, Biersack HJ, Büll U, Felix R, Günnewig BJ, Heiss WD, Hör G, Jordan K, Knapp WH, Müller-Gärtner HW, et al.Hundeshagen H, et al. Among authors: knapp wh.Nuklearmedizin. 1994 Apr;33(2):145-53.Nuklearmedizin. 1994.PMID: 8177759German.No abstract available.
Weckesser E, Redeker J, Kühnel G, Börner AR, Flügel M, Knapp WH.Weckesser E, et al. Among authors: knapp wh.Nuklearmedizin. 2000;39(3):N38-9.Nuklearmedizin. 2000.PMID: 10834199German.No abstract available.
Barthel H, Wiener M, Dannenberg C, Sattler B, Martin WG, Knapp WH.Barthel H, et al. Among authors: knapp wh.Nuklearmedizin. 1997 Jun;36(4):110-6.Nuklearmedizin. 1997.PMID: 9289696German.