“…Diabetes studies typically recruited patients from diabetes registers; one study included newly diagnosed patients [14]. Patients with manifest coronary artery disease were recruited after having experienced a recent acute myocardial infarction [16,32,37], after percutaneous coronary intervention [21], after coronary artery surgery [28], after any of these events [33,38,44,49], or more generally if their diagnosis was proven diagnostically [10,23,25,30,40,46]. Nine studies were done in Europe [11,15,19,24,32,33,38,44,47], seven in the USA [10,13,14,17,31,39,41], two in Canada [46], one in India [23], Hong Kong [48], South Korea [20], Australia [28], Thailand [45], and Japan [35], respectively (Table 1).…”