physicians are reticent to recommend warfarin for elderly patients in AF, despite evidence of increased benefit in these patients compared with younger patients. Risk of falls and previous bleeding were also shown to be disproportionate barriers to warfarin prescription. Further studies are required to determine how best to overcome these perceived barriers to appropriate anticoagulation.

International audienceIn this paper several of the early workers in the field of system dynamics tell some of the history of the Society itself. Several slightly different versions of this story have been told over the past several years and we thought it would be interesting to involve a broader group in this kind of modified oral history projec

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