[1] Department of Nuclear Medicine,
[2] Leiden University Medical Center,undefined
[3] Albinusdreef 2,undefined
[4] 2300 RC Leiden,undefined
[5] The Netherlands Tel.: +31-715261880,undefined
[6] Fax: +31-715266751,undefined
[7] Department of Nuclear Medicine,undefined
[8] University Hospital Utrecht,undefined
[9] The Netherlands,undefined
[10] Department of Otolaryngology,undefined
[11] University Hospital Utrecht,undefined
[12] The Netherlands,undefined