5-Aminolevulinic acid photodynamic therapy versus argon plasma coagulation for ablation of Barren's oesophagus: A randomised trial von HAGE, M, SIERSEMA, P. D, VAN LAETHEM, J-L, DEVIERE, J, VAN DEKKEN, H, STEYERBERG, E. W, HARINGSMA, J, VAN DE VRIE, W, GROOL, T. E, VAN VEEN, R. L. P, SLERENBORG, H. J. C. M, KUIPERS, E. J

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