AUTHOR=Wolf Peter , de Grujil Frank R. TITLE=Editorial: Photomedicine JOURNAL=Frontiers in Medicine VOLUME=6 YEAR=2019 URL=https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2019.00161 DOI=10.3389/fmed.2019.00161 ISSN=2296-858X