[1] Harvard Univ, Sch Med, Dept Otolaryngol, Massachusetts Eye & Ear Infirm, Boston, MA 02115 USA
[2] Harvard Univ, Sch Med, Dept Neurosurg, Massachusetts Gen Hosp, Boston, MA 02115 USA
[3] Harvard Univ, Sch Med, Dept Infect Dis, Massachusetts Gen Hosp, Boston, MA 02115 USA
[4] Harvard Univ, Sch Med, Dept Radiol, Massachusetts Gen Hosp, Boston, MA 02115 USA
[5] Harvard Univ, Sch Med, Dept Pathol, Massachusetts Gen Hosp, Boston, MA 02115 USA
[6] Harvard Univ, Sch Med, Dept Otol & Laryngol, Boston, MA 02115 USA
[7] Harvard Univ, Sch Med, Dept Surg, Boston, MA 02115 USA
[8] Harvard Univ, Sch Med, Dept Med, Boston, MA 02115 USA
[9] Harvard Univ, Sch Med, Dept Radiol, Boston, MA 02115 USA
[10] Harvard Univ, Sch Med, Dept Pathol, Boston, MA 02115 USA
[11] Harvard Univ, Sch Med, Dept Otolaryngol, Massachusetts Gen Hosp, Boston, MA 02115 USA