[1] Natl Specialized Childrens Hosp Okhmatdyt, Kiev, Ukraine
[2] Morozovskaya Childrens City Clin Hosp, Moscow, Russia
[3] Fed Med & Biol Agcy, Fed State Budgetary Sci Inst Kirov Sci Res Inst H, Kirov, Russia
[4] St Joseph Univ, Hotel Dieu France Hosp, Beirut, Lebanon
[5] NINI Hosp, Byblos, Lebanon
[6] LAU Gilbert & Rose Marie Chaghoury Sch Med, Byblos, Lebanon
[7] Emory Univ, Dept Pediat, Sch Med, Atlanta, GA USA