AUTHOR=Kodama Kanae , Takamoto Kouichi , Nishimaru Hiroshi , Matsumoto Jumpei , Takamura Yusaku , Sakai Shigekazu , Ono Taketoshi , Nishijo Hisao TITLE=Corrigendum: Analgesic Effects of Compression at Trigger Points Are Associated With Reduction of Frontal Polar Cortical Activity as Well as Functional Connectivity Between the Frontal Polar Area and Insula in Patients With Chronic Low Back Pain: A Randomized Trial JOURNAL=Frontiers in Systems Neuroscience VOLUME=13 YEAR=2020 URL=https://www.frontiersin.org/journals/systems-neuroscience/articles/10.3389/fnsys.2019.00081 DOI=10.3389/fnsys.2019.00081 ISSN=1662-5137