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Wilkens, H; Demertzis, S; König, J; Leitnaker, C K; Schäfers, H J; Sybrecht, G W (2000). Lung volume reduction surgery versus conservative treatment in severe emphysema. European respiratory journal, 6(16), pp. 1043-9. Sheffield, UK: European Respiratory Society 10.1034/j.1399-3003.2000.16f04.x
Demertzis, S; Wilkens, H; Lindenmeir, M; Graeter, T; Schäfers, H J (1998). Lung volume reduction surgery for severe emphysema. Journal of cardiovascular surgery, 6(39), pp. 843-7. Torino: Minerva Medica
Demertzis, S; Wilkens, H; Schäfers, H J (1997). [Lung volume reduction in severe emphysema]. Medizinische Klinik, -(92 Suppl 5), pp. 17-20. München: Springer-Medizin-Verlag 10.1007/BF03041974
