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Phosphatidylcholine for Steroid-Refractory Chronic Ulcerative Colitis: A Randomized Trial
Wolfgang Stremmel, MD; Robert Ehehalt, MD; Frank Autschbach, MD; Max Karner, MD
Annals of Internal Medicine 2007;147:603-610. doi:10.7326/0003-4819-147-9-200711060-00004

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