TY  - JOUR
A1  - Englert, Heike
A1  - Schäfer, GA.
A1  - Roll, S.
A1  - Ahlers, CJ.
A1  - Beier, K.
A1  - Willich, SN.
T1  - Prevalence of erectile dysfunction among middle-aged men in a metropolitan area in Germany
JF  - Int J Impotence Res
Y1  - 2007
SN  - 0955-9930
VL  - 19
SP  - 183
EP  - 188
ER  -