AUTHOR=Liu Wenlong , Chen Xinting , Lu Xuanyu , Fan Xiucheng TITLE=Corrigendum: Exploring the Relationship Between Users' Psychological Contracts and Their Knowledge Contribution in Online Health Communities JOURNAL=Frontiers in Psychology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2021.716702 DOI=10.3389/fpsyg.2021.716702 ISSN=1664-1078