Corrigendum: Sialyllactose and Galactooligosaccharides Promote Epithelial Barrier Functioning and Distinctly Modulate Microbiota Composition and Short Chain Fatty Acid Production In Vitro - Perdijk, Olaf; van Baarlen, Peter; Fernandez-Gutierrez, Marcela M.; van den Brink, Erik; Schuren, Frank H. J.; Brugman, Sylvia; Savelkoul, Huub F. J.; Kleerebezem, Michiel; van Neerven, R. J. Joost (Frontiers in Immunology, 2019)