CORRESPONDENCE: Authors' reply
Jansen
L
The Netherlands Cancer Institute; Plesmanlaan 121; 1066 CX Amsterdam; The Netherlands; Department of Surgery; Gelre Hospital; Lukas Site; PO Box 9014; 7300 Department of Surgery; Apeldeern; The Netherlands.
Nieweg
OE
Peterse
L
Hoefnagel
CA
Olmos
AV
Kroon
BB