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Immortal person-time bias in the association between herpes zoster and survival following autologous stem cell transplantation

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Correspondence to S A J Schmidt.

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Schmidt, S., Lash, T. Immortal person-time bias in the association between herpes zoster and survival following autologous stem cell transplantation. Bone Marrow Transplant 50, 878–879 (2015). https://doi.org/10.1038/bmt.2015.66

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