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 T2 - Int J Impotence Res Y1 - 2007 UR - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/12591 SN - 0955-9930 VL - 19 SP - 183 EP - 188 ER -