[1] IAEA, Div Human Hlth, A-1400 Vienna, Austria
[2] Royal Free & Univ Coll London, Sch Med, Univ Dept Surg, London, England
[3] Univ Innsbruck Hosp, Univ Clin Nucl Med, A-6020 Innsbruck, Austria
[4] Nishtar Hosp, Multan Inst Nucl Med & Radiotherapy MINAR, Multan, Pakistan
[5] Univ Uruguay, Hosp Clin, Dept Nucl Med, Montevideo, Uruguay
[6] Univ S Florida, Coll Med, Dept Surg, Tampa, FL 33612 USA
[7] Univ Calif San Francisco, Sch Med, Calif Pacific Med Ctr, San Francisco, CA USA
[8] Univ Pisa, Sch Med, Reg Ctr Nucl Med, I-56125 Pisa, Italy