Authors' reply to letter: He who controls Clostridia and Bacteroidia controls the gut microbiome: The concept of targeted probiotics to restore the balance of keystone taxa in irritable bowel syndrome - Mullish,BH; Michael,DR; Dabcheva,M; Webberley,TS; Coates,N; John,DA; Wang,D; Luo,Y; Plummer,SF; Marchesi,JR (NEUROGASTROENTEROLOGY AND MOTILITY, 2024)