[1] St Louis Univ, Sch Med, Dept Pediat, St Louis, MO 63104 USA
[2] Univ Tromso, Dept Otolaryngol, Inst Clin Med, N-9001 Tromso, Norway
[3] Univ Sao Paulo, Sch Med, Lab Med Invest, Sao Paulo, Brazil
[4] SUNY Buffalo, Sch Med, Childrens Hosp, Dept Pediat, Buffalo, NY USA
[5] Wexner Inst Pediat Res, Childrens Res Inst, Dept Pediat, Columbus, OH USA
[6] Univ Texas, Med Branch, Dept Pediat, Childrens Hosp, Galveston, TX 77550 USA
[7] Turku Univ Hosp, Dept Pediat, FIN-20520 Turku, Finland
[8] Tufts Univ, Dept Otolaryngol, Boston, MA 02111 USA
[9] Shimane Med Univ, Dept Otolaryngol, Izumo, Shimane 693, Japan
[10] Kagoshima Univ, Dept Otolaryngol, Kagoshima 890, Japan
[11] Soroka Univ, Ctr Med, Dept Otolaryngol Head & Neck Surg, Beer Sheva, Israel
[12] Ben Gurion Univ Negev, Fac Hlth Sci, Beer Sheva, Israel
[13] SUNY Buffalo, Div Infect Dis, Buffalo, NY USA
[14] Washington Univ, Sch Med, Dept Pediat & Mol Microbiol, St Louis, MO USA