[1] KAROLINSKA INST,HUDDINGE HOSP,DEPT PEDIAT,S-10401 STOCKHOLM 60,SWEDEN
[2] KAROLINSKA INST,HUDDINGE HOSP,DEPT PEDIAT SURG,S-10401 STOCKHOLM 60,SWEDEN
[3] KAROLINSKA INST,HUDDINGE HOSP,DEPT SURG,S-10401 STOCKHOLM 60,SWEDEN
[4] KAROLINSKA INST,HUDDINGE HOSP,DEPT MED,S-10401 STOCKHOLM 60,SWEDEN
[5] KAROLINSKA INST,ST GORANS CHILDRENS HOSP,S-11281 STOCKHOLM,SWEDEN