“…We also think about evidence quality as a structural problem: What kinds of studies deserve readers' attention more than others, and which sorts of studies need tougher scrutiny. Last year, we identified some characteristics of certain laboratory studies that set them apart as ''product testing,'' explained why the evidence mustered in studies of this design generally is not compelling, and indicated that our enthusiasm for publishing this kind of work is low [2]. This month in CORR 1 , we say goodbye to a genre of clinical research-the case report-likewise because the Editorial Board concurs that this study design no longer meets our readers' needs for high-quality evidence.…”