[1] Department of Otorhinolaryngology,
[2] Head and Neck Surgery,undefined
[3] University Hospital,undefined
[4] Zurich,undefined
[5] Switzerland,undefined
[6] Department of Radiology,undefined
[7] University Children's Hospital,undefined
[8] Zurich,undefined
[9] Switzerland,undefined
[10] Department of Biostatistics,undefined
[11] University of Zurich,undefined
[12] Zurich,undefined
[13] ,undefined
[14] Switzerland,undefined
[15] Department of Otolaryngology,undefined
[16] Medical University of South Carolina,undefined
[17] Charleston,undefined
[18] South Carolina,undefined
[19] USA,undefined