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David A. Johnson
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dajevms@aol.com
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David
A.
Johnson
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principal investigator on
A Multicenter, Randomized, Double-Blind, Placebo-Controlled Efficacy Study Comparing 4 Weeks of Treatment With Esomeprazole 20 mg qd to Placebo qd in Patients With Heartburn and Sleep Disturbances Associated With Gastroesophageal Reflux Disease (GERD)
MIcrobiome Analysis of Chronically Constipated Versus Non-constipated Populations for Detection of Novel Molecular Entities With Therapeutic Potential
Pilot Study: Quality Evaluation of Stool Samples Collected for Microbiome Analysis Using the HyGIeaCare Prep
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