[1] VIENNA UNIV,DEPT SURG 1,A-1090 VIENNA,AUSTRIA
[2] VIENNA UNIV,DEPT MED 2,DIV NUCL MED,A-1090 VIENNA,AUSTRIA
[3] VIENNA UNIV,LUDWIG BOLTZMANN INST NUCL MED,A-1090 VIENNA,AUSTRIA
[4] VIENNA UNIV,DEPT PSYCHIAT,DIV PSYCHOSOMAT MED,A-1090 VIENNA,AUSTRIA
[5] VIENNA UNIV,DEPT MED 1,A-1090 VIENNA,AUSTRIA