[1] St Antonius Hosp, Dept Surg, NL-3430 EM Nieuwegein, Netherlands
[2] TNO VU Univ, Inst Res Extramural Med, Dept Occupat & Publ Hlth, Med Ctr, Amsterdam, Netherlands
[3] Maxima Med Ctr, Dept Sports Med, Veldhoven, Netherlands
[4] Univ Med Ctr Utrecht, Dept Surg, Utrecht, Netherlands
[5] St Antonius Hosp, Dept Internal Med, NL-3430 EM Nieuwegein, Netherlands