Corrigendum: Effects of Xiao Chengqi formula on slow transit constipation by assessing gut microbiota and metabolomics analysis in vitro and in vivo - Zhou, Qian; Zhang, Di; Zhang, Heng; Wan, Xingyang; Hu, Bang; Zou, Qi; Su, Dan; Peng, Hui; Huang, Dandan; Ren, Donglin (Frontiers in Pharmacology, 2023)