Dear @PretermBirthVaginalMicrobiomeParticipants , We are pleased to report the preprint of the methods paper used to generate the data for this challenge! [This manuscript](https://www.biorxiv.org/content/10.1101/2022.07.26.501561v1) explains the need for harmonization of microbiome data, and validates the phylogenetic scaffolding approach used by MaLiAmPi to generate many of the data used in this challenge, including: - Alpha diversity - Pairwise phylogenetic distance (KRD) - Phylotype-counts Best, @PretermBirthVaginalMicrobiomeOrganizers