Association of Helicobacter pylori infection and Parkinson's disease already proposed.
Altschuler
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D005756:Gastritis / Q000150:complications* / Q000175:diagnosis; D016481:Helicobacter Infections / Q000150:complications* / Q000175:diagnosis; D016480:Helicobacter pylori; D006801:Humans; D018917:Optic Neuropathy, Ischemic / Q000209:etiology*; D010300:Parkinson Disease / Q000209:etiology*; D012307:Risk Factors