First Online: 16 September 2020
: No sources of funding were used to assist with the preparation of this review.
: TP, LS, and RH have no conflicts of interest that are directly relevant to the content of this review. RM has received grants from governmental and societal research institutes such as NWO, ZonMW, and Innovation Fund and unrestricted investigator research grants from Baxter/Baxalta/Shire/Takeda, Bayer, CSL Behring, and Sobi. He has served as an advisor for Bayer, CSL Behring, Merck Sharp & Dohme, and Baxter/Baxalta/Shire/Takeda. All grants and fees were paid to the institution. MC has received grants from governmental research institutes such as Dutch Research Institute (NWO), ZonMW, Innovation Fund, and NWO-NWA and unrestricted investigator-initiated research grants as well as educational and travel funding from the following companies over the years: Pfizer, Baxter/Baxalta/Shire, Bayer Schering Pharma, CSL Behring, Sobi Biogen, Novo Nordisk, Novartis, and Nordic Pharma, and has served as a member on steering boards of Roche and Bayer. All grants, awards, and fees received went to the institution. FWGL received unrestricted search grants of CS: Behring, Takeda, and UniQure. He is also a consultant for CSL Behring, Takeda, and UniQure of which fees go to the institution. He received travel support from Sobi. He is a DSMB member for a study conducted by Roche. MK reports grants from Daiichi Sankyo, Boehringer Ingelheim, Pfizer, and Sobi, and grants and fees from Bayer, all outside the submitted work and payments to the Department of Hematology of Erasmus MC.
: Not applicable.
: Not applicable.
: TP and LS performed the literature search, analyzed the data, and wrote the manuscript. RH and RM supervised the study and provided critical guidance during the analysis. MC, FL, and MK critically reviewed the paper and provided additional comments. All authors approved the final version of the manuscript.