title: Effects of Lactobacillus gasseri OLL 2716 (LG21) on Helicobacter pylori infection in children.
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D016481:Helicobacter Infections / Q000178:diet therapy*; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D007778:Lactobacillus / Q000502:physiology*; D008297:Male