**Author details**

Fredrik Uhlin1,2\* and Ivo Fridolin2

1 Department of Nephrology and Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden

2 Department of Health Technologies, Tallinn University of Technology (TalTech), Tallinn, Estonia

\*Address all correspondence to: fredrik.uhlin@regionostergotland.se

© 2023 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*Optical Online Monitoring of Uremic Toxins beyond Urea DOI: http://dx.doi.org/10.5772/intechopen.110080*
