COST Action CA-15209: Eurelax (European Network on NMR Relaxometry), Conference on achievements and perspectives of NMR relaxometry on achievements and perspectives of NMR relaxometry COST Action CA-15209: Eurelax (European Network on NMR Relaxometry), Conference on achievements and perspectives of NMR relaxometry on achievements and perspectives of NMR relaxometry, Mar 2021, Virtual conference, Poland HAL