@article{AhlersSchaeferMundtetal.2011,
  author    = {Ahlers, CJ. and Schaefer, GA. and Mundt, IA. and Roll, S. and Englert, Heike and Willich, SN. and Beier, KM.},
  title     = {How unusual are the contents of paraphilias? Paraphilia-associated sexual arousal patterns in a community-based sample of men},
  series = {J Sex Med},
  volume    = {8},
  journal   = {J Sex Med},
  issn      = {1743-6095},
  pages     = {1362 -- 1370},
  year      = {2011},
  language  = {en}
}
@article{EnglertSchaeferRolletal.2007,
  author    = {Englert, Heike and Sch{\"a}fer, GA. and Roll, S. and Ahlers, CJ. and Beier, K. and Willich, SN.},
  title     = {Prevalence of erectile dysfunction among middle-aged men in a metropolitan area in Germany},
  series = {Int J Impotence Res},
  volume    = {19},
  journal   = {Int J Impotence Res},
  issn      = {0955-9930},
  pages     = {183 -- 188},
  year      = {2007},
  language  = {en}
}