Mathematics and art through the strings as with a bird cage and to see one form within another which excited me." The artists Theo van Doesburg and Piet Mondrian founded the De Stijl movement, which they wanted to "establish a visual vocabulary elementary geometrical forms comprehensible by all and adaptable to any discipline". Many of their artworks visibly consist of ruled squares and triangles, sometimes also with circles. De Stijl artists worked in painting, furniture, interior design and architecture. After the breakup of De Stijl, Van Doesburg founded the Avant-garde Art Concret movement, describing his 1929–1930 "Arithmetic Composition", a series of four black
Jos van der Meer as a treatment for HIDS. This finding not only provides patients with an effective therapy, but also provides further proof that HIDS is an interleukin-1 disease. Since 1987, van der Meer worked on the role of cytokines in health and inflammatory disease. The work started in Boston and was continued in Nijmegen. In the years to follow, Bart-Jan Kullberg (1992), Mihai Netea (1994) and Leo AB Joosten (2007) joined the group. Major findings of the group are: As a clinician confronted with patients with chronic fatigue syndrome (CFS), van der Meer was intrigued by their suffering. Since 1989 together with