Acknowledgments
This study was supported by research funding from Olink Bioscience, Uppsala, Sweden to O.L., and also was funded in part through the NIH/NCI Cancer Center Support Grant P30 CA008748.
Potential conflict of interest
Disclosure forms provided by the authors are available with the full text of this article online at https://doi.org/10.1080/10428194.2017.1403020.