MPO and coronary artery disorder: In the study of the effect of myeloperoxidase (MP) on the function of high-density lipoprotein cholesterol (HDL-C) and on HDL-proteome in 4 groups of ethnic Chinese (20 patients per group): (1) persons with a low level of HDL-C, without CHD; (2) persons with a low level of HDL-C and with CHD; (3) persons with a high level of HDL-C, without CHD; (4) persons with a high level of HDL-C with CHD.