RT - SR - Electronic T1 - Clarithromycin-resistance of Helicobacter pylori strains isolated in St.Petersburg, Russia JF - Helicobacter SP - 2022-08-31 A1 - Svarval A., A1 - Starkova D., A1 - Ferman R., YR - 2020-12-01 UL - https://pasteur.elpub.ru/publication/1668 AB -