6Stipanuk M H,Beck P W.Characterization of the enzymic capacity for Cysteine desulphhydration in liver and kidney of the rat[J].Biochem,1982,206:267-277.
7Sawhney R C,Chhabra P C,Malhotra A S,et al.Hormone profiles at high altitude in man[J].Andrologia,1985,17(2):178-184.
8Melman A,Gingell J C.The epidemiology and pathophysiology of erectile dysfunction[J].J Urol,1999,161(1):5-11.