Acknowledgements
The authors would like to thank everyone reporting to the ALL-registry and Ann-Sofi Hörstedt, Hanna Åberg, and Ann-Katrin Andersson at the Regional Cancer Center South, Lund, Sweden.
The research was supported by the Lions Cancer Foundation, the Selander Foundation and Thuréus Foundation, Uppsala, Sweden.
Potential conflict of interest
Disclosure forms provided by the authors are available with the full text of this article online at https://doi.org/10.1080/10428194.2017.1416369.