Pouwer, A. W.
te Grootenhuis, N. C. http://orcid.org/0000-0001-7488-7095
Hinten, F.
de Bock, G. H.
van der Zee, A. G. J.
Melchers, W. J. G.
Oonk, M. H. M.
de Hullu, J. A.
Hollema, H.
Bulten, J.
Funding for this research was provided by:
Universitair Medisch Centrum Groningen
Scientific Institute for Quality of Healthcare, Radboud Universitair Medisch Centrum
Article History
Received: 5 May 2023
Revised: 23 October 2023
Accepted: 26 October 2023
First Online: 8 November 2023
Declarations
:
: The patient data were stored in an electronic database (Castor EDC) using study-specific numbers to guard the patient identity []. Only two data managers for each treatment center, separately, had access to the code-list and were able to relate the specific codes to the identifying patient data. Because of these procedures and the fact that patients did not object against the use of their clinical data or tumor material, no further patient or Institutional Review Board approval was needed, according to the Dutch law applicable during this data collection.
: The authors declare no competing interests.