[1] Diakonessenhuis Utrecht, Dept Geriatr Med, Utrecht, Netherlands
[2] Diakonessenhuis Utrecht, Dept Surg, Utrecht, Netherlands
[3] Diakonessenhuis Utrecht, Dept Internal Med, Utrecht, Netherlands
[4] Gelre Hosp, Dept Surg, Apeldoorn, Netherlands
[5] Univ Amsterdam, Acad Med Ctr, Dept Internal Med, NL-1105 AZ Amsterdam, Netherlands
[6] Gelre Hosp, Dept Geriatr Med, Apeldoorn, Netherlands