Corrigendum: Modulation of local immunity by the vaginal microbiome is associated with triggering spontaneous preterm birth - Yijia Liang; Yijia Liang; Yijia Liang; Changying Zhao; Yan Wen; Dashuang Sheng; Tiantian Wei; Tianqi Hu; Junhui Dai; Guoping Zhao; Guoping Zhao; Guoping Zhao; et al. (Frontiers in Immunology)