Title	Polymorphisms in genes encoding acetylsalicylic acid metabolizing enzymes are unrelated to upper gastrointestinal health in cardiovascular patients on acetylsalicylic acid
Author(s)	MGH van Oijen, S Huybers, WHM Peters, JPH Drenth, RJF Laheij, FWA Verheugt and JBMJ Jansen
Publication	British Journal of Clinical Pharmacology 2005; 60:623-8
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Title	Anxiety, depression and psychotropic medication use in patients with persistent upper and lower gastrointestinal symptoms
Author(s)	LAS van Kerkhoven, LGM van Rossum, MGH van Oijen, EM Witteman, JBMJ Jansen, RJF Laheij and ACITL Tan
Publication	Alimentary Pharmacology and Therapeutics 2005; 21:1001-6
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