PeerJ Author 170 Points Contributions by role Author 135 Preprint Author 35 Contributions by subject area Microbiology Gastroenterology and Hepatology Public Health Statistics Karla Ballman PeerJ Author Summary Bioinformatics Data Mining & Machine Learning Data Science Statistics PeerJ Contributions Articles 1 Preprints 1 January 7, 2016 Impact of demographics on human gut microbial diversity in a US Midwest population Jun Chen, Euijung Ryu, Matthew Hathcock, Karla Ballman, Nicholas Chia, Janet E Olson, Heidi Nelson https://doi.org/10.7717/peerj.1514 PubMed 26839739 November 17, 2015 - Version: 1 Impact of demographics on human gut microbial diversity in a US Midwest population Jun Chen, Euijung Ryu, Matthew Hathcock, Karla Ballman, Nicholas Chia, Janet E Olson, Heidi Nelson https://doi.org/10.7287/peerj.preprints.1512v1