[1] Univ Utrecht, Univ Med Ctr Utrecht, Dept Med Oncol, Utrecht, Netherlands
[2] Univ Utrecht, Univ Med Ctr Utrecht, Dept Epidemiol, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[3] Netherlands Comprehens Canc Org IKNL, Clin Res Dept, Nijmegen, Netherlands
[4] Univ Med Ctr Utrecht, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[5] Erasmus MC, Rotterdam, Netherlands
[6] Univ Amsterdam, Canc Ctr Amsterdam, Med Ctr, Rotterdam, Netherlands
[7] Univ Amsterdam, Canc Ctr Amsterdam, Med Ctr, Amsterdam, Netherlands
[8] Aalborg Univ Hosp, Dept Surg, Aalborg, Denmark
[9] Aalborg Univ Hosp, Aalborg, Denmark
[10] Amphia Hosp, Breda, Netherlands
[11] Elisabeth TweeSteden Hosp, Tilburg, Netherlands
[12] Elisabeth Tweesteden Hosp, Tilburg, Netherlands
[13] Franciscus Gasthuis & Vlietland, Rotterdam, Netherlands
[14] Franciscus Gasthuis & Vlietland, Dept Med Oncol, Rotterdam, Netherlands
[15] Herlev & Gentofte Univ Hosp, Herlev, Denmark
[16] Herlev & Gentofte Hosp, Herlev, Denmark
[17] Isala Oncol Ctr, Zwolle, Netherlands
[18] Radboud Univ Nijmegen, Med Ctr, Nijmegen, Netherlands