Confounding by indication, histamine-2 receptor antagonists, and gastric cancer.
Edwardes
M D
MD
Baltzan
M
M
D002927:Cimetidine / Q000009:adverse effects*; D015986:Confounding Factors, Epidemiologic; D006635:Histamine H2 Antagonists / Q000009:adverse effects*; D006801:Humans; D013274:Stomach Neoplasms / Q000139:chemically induced*
D006635:Histamine H2 Antagonists; D002927:Cimetidine