Correction: Comparative evaluation of a new magnetic bead-based DNA extraction method from fecal samples for downstream next-generation 16S rRNA gene sequencing. oleh Kara D McGaughey, Tulay Yilmaz-Swenson, Nourhan M Elsayed, Dianne A Cruz, Ramona M Rodriguez, Michael D Kritzer, Angel V Peterchev, Megan Gray, Samantha R Lewis, Jeffrey Roach, William C Wetsel, Douglas E Williamson