1. WHO Task Force on The Diagnosis and Treatment of Infertility (1987) Towards more objectivity in diagnosis and management of male infertility. Int J Androl Suppl 7:1–53
2. Nieschlag E (2002) Nosologie andrologischer Krankheitsbilder. In: Nieschlag E, Behre H (eds) Andrologie. Grundlagen und Klinik der reproduktiven Gesundheit des Mannes. Springer, Berlin
3. Weidner W, Diemer Th, Wagenlehner FME (2010) Male infertility in chronic urogenital infections and inflammation with special reference to ejaculate findings. In: Björndahl L, Giwercman A, Tournaye H, Weidner W (eds) Clinical andrology. Informa Healthcare, New York, London
4. EAU Working Group on Male Infertility (2012) European association of urology guidelines on male infertility: the 2012 update. Eur Urol 62:324–332
5. Chan PT, Schlegel PN (2002) Inflammatory conditions of the male excurrent ductal system. Part I. J Androl 23:453–460