[1] Humboldt Univ, Klinikum Charite, Fak Med, Med Klin,Dept Internal Med, D-13353 Berlin, Germany
[2] Humboldt Univ, Klinikum Charite, Fak Med, Dept Surg, D-13353 Berlin, Germany
[3] Humboldt Univ, Klinikum Charite, Fak Med, Dept Pathol, D-13353 Berlin, Germany
[4] Kobe Univ, Sch Med, Dept Surg 1, Kobe, Hyogo 650, Japan