Prevalence and antimicrobial resistance of highly virulent cagA-positive Helicobacter pylori strains in Southern Poland. - Klesiewicz K; Orczykowska-Kotyna M; Skiba-Kurek I; Empel J; Kania K; Karczewska E (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2025)