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Second-line levofloxacin-based quadruple therapy versus bismuth-based quadruple therapy for Helicobacter pylori eradication and long-term changes to the gut microbiota and antibiotic resistome: a multicentre, open-label, randomised controlled trial

ProbioticDysbiosisHealth SciencesAntibioticsMedicineGastroenterologyGut MicrobiotaCombination TherapyAntimicrobial ChemotherapyMicrobiologyAntibiotic ResistomeMicrobiomeAntibiotic ResistancePharmacologyBismuth-based Quadruple TherapyClinical MicrobiologyAntimicrobial ResistanceDrug Resistance