This paper is an introductory guide to many-particle hydrodynamic interactions. Basic concepts of the fluid mechanics are assumed to be known. Experience in the Stokes equations is useful but not necessary. The study is estimated to fit five sessions about three hours each. Auguste Rodin: “Nothing else that I have done satisfies me as much, because nothing else cost me so much effort...”[**]

Crohn's disease (CD) is occasionally diagnosed in asymptomatic patients undergoing colonoscopy for other reasons, but their clinical outcomes and optimal management remain poorly defined. A retrospective cohort study of with incidental diagnosis CD. The primary outcome was defined as the occurrence a flare. Secondary included time to flare, initiation corticosteroids or immunomodulators/biologi...

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