Bojesen A, Gravholt CH (2007) Klinefelter syndrome in clinical practice. Nat Clin Pract Urol 4:192–204
Bojesen A, Juul S, Gravholt CH (2003) Prenatal and postnatal prevalence of Klinefelter syndrome: A national registry study. J Clin Endocrinol Metab 88:622–626
Ferlin A, Arredi B, Speltra E et al (2007) Molecular and clinical characterization of Y chromosome microdeletions in infertile men: A 10-year experience in Italy. J Clin Endocrinol Metab 92:762–770
Fullerton G, Hamilton M, Maheshwari A (2010) Should non-mosaic Klinefelter syndrome men be labelled as infertile in 2009? Hum Reprod 25:588–597
Lanfranco F, Kamischke A, Zitzmann M, Nieschlag E (2004) Klinefelter’s syndrome. Lancet 364:273–283
Ludwig M, Gromoll J, Hehr U, Wieacker P (2004) Stellungnahme der Arbeitsgemeinschaft Reproduktionsgenetik der deutschen Gesellschaft für Reproduktionsmedizin: Empfehlung zur genetischen Diagnostik bei Kinderwunschpaaren. J Reproduktionsmed Endokrinol 1:190–193
McLachlan RI, O’Bryan MK (2010) State of the art for genetic testing of infertile men. J Clin Endocrinol Metab 95:1013–1024
Meschede D, Lemcke B, Behre HM et al (2000) Clustering of male infertility in the families of couples treated with intracytoplasmic sperm injection. Hum Reprod 15:1604–1608
Noordam MJ, Repping S (2006) The human Y chromosome: A masculine chromosome. Curr Opin Genet Dev 16:225–232
Simoni M, Bakker E, Krausz C (2004) EAA/EMQN best practice guidelines for molecular diagnosis of y-chromosomal microdeletions. State of the art 2004. Int J Androl 27:240–249
Simoni M, Tüttelmann F, Gromoll J, Nieschlag E (2008) Clinical consequences of microdeletions of the Y chromosome: The extended Münster experience. Reprod Biomed Online 16:289–303
Tüttelmann F, Gromoll J (2010) Novel genetic aspects of Klinefelter’s syndrome. Mol Hum Reprod 16:386–395
Tüttelmann F, Rajpert-De Meyts E, Nieschlag E, Simoni M (2007) Gene polymorphisms and male infertility – a meta-analysis and literature review. Reprod Biomed Online 15:643–658
Tüttelmann F, Werny F, Cooper TG et al (2010) Clinical experience with azoospermia: Aetiology and chances for spermatozoa detection upon biopsy. Int J Androl 28 [Epub ahead of print]
Van Assche E, Bonduelle M, Tournaye H et al (1996) Cytogenetics of infertile men. Hum Reprod 11(Suppl 4):1–24
Vincent MC, Daudin M, De MP et al (2002) Cytogenetic investigations of infertile men with low sperm counts: A 25-year experience. J Androl 23:18–22; discussion 44–45
Visser L, Westerveld GH, Korver CM et al (2009) Y chromosome gr/gr deletions are a risk factor for low semen quality. Hum Reprod 24:2667–2673
Vorona E, Zitzmann M, Gromoll J et al (2007) Clinical, endocrinological, and epigenetic features of the 46,XX male syndrome, compared with 47,XXY Klinefelter patients. J Clin Endocrinol Metab 92:3458–3465
World Health Organization (2010) WHO laboratory manual for the examination and processing of human semen. World Health Organization, Geneva