title: Reply to Lagier et al.
authors.affiliation: Mayo Clinic, Rochester, Minnesota.
authors.forename: Sahil
authors.initials: S
authors.lastname: Khanna
authors.affiliation: Seres Therapeutics, Cambridge Massachusetts.
authors.forename: Julie E
authors.initials: JE
authors.lastname: Button
authors.affiliation: Seres Therapeutics, Cambridge Massachusetts.
authors.forename: Mary-Jane
authors.initials: MJ
authors.lastname: Lombardo
authors.affiliation: Seres Therapeutics, Cambridge Massachusetts.
authors.forename: Marin
authors.initials: M
authors.lastname: Vulic
authors.affiliation: Seres Therapeutics, Cambridge Massachusetts.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Henn
authors.affiliation: Seres Therapeutics, Cambridge Massachusetts.
authors.forename: David N
authors.initials: DN
authors.lastname: Cook
authors.affiliation: Seres Therapeutics, Cambridge Massachusetts.
authors.forename: Roger J
authors.initials: RJ
authors.lastname: Pomerantz
authors.affiliation: Massachusetts General Hospital, Boston.
authors.forename: Elizabeth L
authors.initials: EL
authors.lastname: Hohmann