Funding for this research was provided by:
Stichting Zeldzame Ziekten Fonds
Received: 20 June 2021
Accepted: 11 August 2021
First Online: 23 August 2021
: Informed consent was obtained from patients whom CD34<sup>+</sup> hematopoietic stem and progenitor cells (HSPCs) were used in this study in accordance with the Declaration of Helsinki and Dutch national and Sanquin internal ethic boards. This study was approved by the Medical Ethical Committee of the Amsterdam University Medical Center.
: Not applicable.
: The authors have no relevant financial or non-financial interests to disclose.