AUTHOR=Park YongKeun , Popescu Gabriel , Ferraro Pietro , Kemper Björn TITLE=Editorial: Quantitative Phase Imaging and Its Applications to Biophysics, Biology, and Medicine JOURNAL=Frontiers in Physics VOLUME=7 YEAR=2020 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2019.00226 DOI=10.3389/fphy.2019.00226 ISSN=2296-424X