Does Passive Smoking Impair Endothelium-Dependent Coronary Artery Dilation in Women? 11This study was supported in part by Grant-in-Aid C09670730 from the Ministry of Education, Science, and Culture; by research grants for cardiovascular disease (7A-3, 9A-3) from the Ministry of Health and Welfare in Japan; and by the Smoking Research Foundation Grant for Biochemical Research, Tokyo, Japan.