[1] Univ Maastricht, Dept Mol Cell Biol, Maastricht, Netherlands
[2] Acad Hosp Maastricht, Dept Otorhinolaryngol Head & Neck Surg, Maastricht, Netherlands
[3] Univ Maastricht, Dept Epidemiol, Maastricht, Netherlands
[4] Acad Hosp Maastricht, Dept Pathol, Maastricht, Netherlands