[1] Great Ormond St Hosp Sick Children, Dept Radiol, London WC1N 3JH, England
[2] Ospedale Pediatr Bambin Gesu, Unita Med Nucl, Rome, Italy
[3] CHU St Pierre, Brussels, Belgium
[4] Hosp Valle De Hebron, Barcelona, Spain
[5] Univ Munich, Klin Nukl Med, Munich, Germany
[6] Queen Silvia Childrens Hosp, Gothenburg, Sweden
[7] Ospedale Circolo & Fond, UO Med Nucl, Macchi, Varese, Italy
[8] Azienda Ospedaliera Univ, UOC Med Nucl 1, Padua, Italy