[1] UNIV MUNICH,CHIRURG KLIN,D-8000 MUNICH 2,FED REP GER
[2] UNIV MUNICH,CHIRURG POLIKLIN,D-8000 MUNICH 2,FED REP GER
[3] GESELL STRAHLEN & UMWELTFORSCH MBH,MUNICH,FED REP GER
[4] UNIV MUNICH,KLINIKUM GROSSHADERN,MED KLIN 3,D-8000 MUNICH 70,FED REP GER