AUTHOR=Zheng Yiwen , Liu Mengyao , Jiang Lixin TITLE=Corrigendum: Progress of photoacoustic imaging combined with targeted photoacoustic contrast agents in tumor molecular imaging JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1121672 DOI=10.3389/fchem.2022.1121672 ISSN=2296-2646