Contamination-controlled upper gastrointestinal microbiota profiling reveals salivary-duodenal community types linked to opportunistic pathogen carriage and inflammation. - Schmidt NS; Dörner E; Podlesny D; Bohlhammer E; Bubeck AM; Ruple HK; Tetzlaff-Lelleck V; Sina C; Schmidt H; Fricke WF (Gut microbes, 2025)