Malm, A. et al. 2015. Anti-Helicobacter pylori activity in vitro of chamomile flowers, coneflower herbs, peppermint leaves and thyme herbs – a preliminary report. Current Issues in Pharmacy and Medical Sciences. 28, 1 (May 2015), 30–32. DOI:https://doi.org/10.1515/cipms-2015-0038.