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Authors
Farrag, Ahmed
Ghazaly, Mohamed Hamdy
Mohammed, Khaled
Volland, Ruth
Hero, Barbara
Berthold, Frank
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Funding
Funding for this research was provided by:
SIOP (Fellowship 2011)
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Article History
Received: 31 March 2023
Accepted: 26 July 2023
First Online: 5 September 2023
Declarations
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: This study was performed in line with the principles of the Declaration of Helsinki. Informed Consent was waived due to the retrospective nature of the research and is approved by the Ethics Committee of South Egypt Cancer Institute, Assiut University (Date 14.07.2011/No.35). The Ethics Committee of South Egypt Cancer Institute, Assiut University approved the study.
: Not applicable.
: The authors declare no competing interests.
