Helicobacter pylori in gastro-oesophageal reflux disease needs comparator.
Leontiadis
Grigoris I
GI
Kadis
Savvas
S
Sharma
Virender K
VK
Howden
Colin W
CW
D005764:Gastroesophageal Reflux / Q000382:microbiology*; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D015201:Meta-Analysis as Topic