AUTHOR=Yang Chaopin , Du Meng , Yan Fei , Chen Zhiyi TITLE=Corrigendum: Focused Ultrasound Improves NK-92MI Cells Infiltration Into Tumors JOURNAL=Frontiers in Pharmacology VOLUME=10 YEAR=2019 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2019.00875 DOI=10.3389/fphar.2019.00875 ISSN=1663-9812