5Williams IL, Wheatcroft SB, Shah AM, et al. Obesity, atherosclerosis and the vascular endothelium: mechanisms of reduced nitric oxide bioavailability in obese humans, Int J Obes Relat Metab Disord, 2002, 226(6) :754 - 64.
6Trais hA, Kim NN, Moreland RB, et al. Role of alpha adrenergic receptors in erectile function[J ]. Int J Impot Res, 2000, 12(1) :S48 - 63.