We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDefining the human microbiome.AuthorsUrsell LK; Metcalf JL; Parfrey LW; Knight RPublicationNutrition reviews, 2012, Vol 70 Suppl 1, pS38ISSN1753-4887Publication typearticleDOI10.1111/j.1753-4887.2012.00493.x