[1] Univ Belgrade, Mother & Child Hlth Inst, Sch Med, Dept Pediat Immunol, Belgrade 11070, Serbia
[2] Univ Belgrade, Mother & Child Hlth Inst, Dept Pathol, Belgrade 11070, Serbia
[3] Univ Belgrade, Mother & Child Hlth Inst, Dept Surg, Belgrade 11070, Serbia
[4] Mil Med Acad, Dept Dermatol, Belgrade 11002, Serbia
[5] Mil Med Acad, Dept Pathol Forens Med, Belgrade 11002, Serbia
[6] Newcastle Gen Hosp, Dept Pediat, Newcastle Upon Tyne NE4 6BE, Tyne & Wear, England