Limitations
This study is subject to the biases inherent in retrospective analysis.
We also relied upon the data fidelity of a multicenter registry, which
is susceptible to missing and incorrect data entry. Additionally, the
lack of accurate information about adherence to maintenance
immunosuppression, infections and post-transplant lymphoproliferative
disorders prohibited a thorough analysis. There is also a lack of
information regarding the specific clinical decisions as to why certain
patients may have received induction therapy.