PeerJ Author 235 Points Contributions by role Author 235 Contributions by subject area Bioinformatics Evolutionary Studies Microbiology Gastroenterology and Hepatology Infectious Diseases Genetics Orlando E Acevedo S. PeerJ Author Summary Bioinformatics Evolutionary Studies Genetics Microbiology Past or current institution affiliations Pontifica Universidad Javeriana PeerJ Contributions Articles 2 May 6, 2019 Molecular evolution of the VacA p55 binding domain of Helicobacter pylori in mestizos from a high gastric cancer region of Colombia Andrés J. Gutiérrez-Escobar, María M. Bravo, Orlando Acevedo, Steffen Backert https://doi.org/10.7717/peerj.6634 PubMed 31119065 May 25, 2018 Rapid evolution of the Helicobacter pylori AlpA adhesin in a high gastric cancer risk region from Colombia Andrés Julián Gutiérrez-Escobar, Gina Méndez-Callejas, Orlando Acevedo, Maria Mercedes Bravo https://doi.org/10.7717/peerj.4846 PubMed 29844987