Conclusions� Our study first shows a strong and independent association between ED and silent CAD in apparently uncomplicated type 2 diabetic patients. If our findings are confirmed, ED may become a potential marker to identify diabetic patients to screen for silent CAD. Moreover, the high prevalence of ED among diabetics with silent CAD suggests the need to perform an exercise ECG before starting a treatment for ED, especially in patients with additional cardiovascular risk factors. cGMP was measured on purified CD11b+, CD11c+, CD4+, or CD8+ cells using the Cyclic GMP EIA kit (Cayman Chemical). Data analysis was performed with the workbooks available at http://www.caymanchem.com/neptune/servlet/neptune/template/analysis%2CEIA.vm/a/z. Data are expressed as mean � SE of quadruplicate wells. looking for viagra ? canadian pharmacy viagra for sale Smoking, which can lead to any of the above risk factors, is perhaps the most significant risk factor for impotence related to arteriosclerosis. buy Viagra 120mg here canadian pharmacy viagra