Marion Adam, Henryk F. Urbanski, Vasilios T. Garyfallou, Ulrich Welsch, Frank M. Köhn, J. Ullrich Schwarzer, Leena Strauss, Matti Poutanen  and AM. Associated With Inhibition of Testicular Function. 2013;35(4):550–61.

Tüttelmann F, Damm OS, Luetjens CM, Baldi M, Zitzmann M, Kliesch S, et al. Intratesticular testosterone is increased in men with Klinefelter syndrome and may not be released into the bloodstream owing to altered testicular vascularization - a preliminary report. Andrology. 2014;2(2):275–81.

D’Aurora M, Ferlin A, Di Nicola M, Garolla A, De Toni L, Franchi S, et al. Deregulation of sertoli and leydig cells function in patients with klinefelter syndrome as evidenced by testis transcriptome analysis. BMC Genomics. 2015;16(1):1–9.

Carlomagno F, Pozza C, Tenuta M, Pofi R, Tarani L, Sesti F, et al. Testicular Microvascular Flow Is Altered in Klinefelter Syndrome and Predicts Circulating Testosterone. J Clin Endocrinol Metab. 2022;107(1):E236–45.

Li J, Chen X, McClusky R, Ruiz-Sundstrom M, Itoh Y, Umar S, et al. The number of X chromosomes influences protection from cardiac ischaemia/reperfusion injury in mice: One X is better than two. Cardiovasc Res. 2014;102(3):375–84.

HALL, John E.. Guyton & Hall Tratado de Fisiologia Médica. 13. ed. Rio de Janeiro: Elsevier, 2017. 1176 p.

Ferlin, A., Schipilliti, M., Di Mambro, A., Vinanzi, C. and Foresta, C., 2010. Osteoporosis in Klinefelter's syndrome. Molecular Human Reproduction, 16(6), pp.402-410.

Husam Ghanim, Sandeep Dhindsa, Kelly Green, Sanaa Abuaysheh, Manav Batra, Antoine Makdissi, Ajay Chaudhuri, Paresh Dandona, Increase in Osteocalcin Following Testosterone Therapy in Men With Type 2 Diabetes and Subnormal Free Testosterone, Journal of the Endocrine Society, Volume 3, Issue 8, August 2019, Pages 1617–1630, https://doi.org/10.1210/js.2018-00426

Lizarazo, A., McLoughlin, M. and Vogiatzi, M., 2019. Endocrine aspects of Klinefelter syndrome. Current Opinion in Endocrinology & Diabetes and Obesity, 26(1), pp.60-65.

Gravholt, C., Chang, S., Wallentin, M., Fedder, J., Moore, P. and Skakkebæk, A., 2021. Klinefelter Syndrome: Integrating Genetics, Neuropsychology, and Endocrinology.

Chang, S., Skakkebæk, A., Davis, S. and Gravholt, C., 2020. Morbidity in Klinefelter syndrome and the effect of testosterone treatment. American Journal of Medical Genetics Part C: Seminars in Medical Genetics, 184(2), pp.344-355.

Garolla, A. and Corona, G., 2020. Klinefelter's syndrome. 1st ed.

Bae, J., 2016. Klinefelter Syndrome and Metabolic Disorder. Endocrinology and Metabolism, 31(4), p.535.

Simon Chang, Anne Skakkebæk, Christian Trolle, Anders Bojesen, Jens Michael Hertz, Arieh Cohen, David Michael Hougaard, Mikkel Wallentin, Anders Degn Pedersen, John Rosendahl Østergaard, Claus Højbjerg Gravholt, Anthropometry in Klinefelter Syndrome - Multifactorial Influences Due to CAG Length, Testosterone Treatment and Possibly Intrauterine Hypogonadism, The Journal of Clinical Endocrinology & Metabolism, Volume 100, Issue 3, 1 March 2015, Pages E508–E517, https://doi.org/10.1210/jc.2014-2834

anti, D., De Vincentis, S., Scaltriti, S. et al. Relative hyperestrogenism in Klinefelter Syndrome: results from a meta-analysis. Endocrine 64, 209–219 (2019). https://doi.org/10.1007/s12020-019-01850-y

Temeka Zore, Maria Palafox, Karen Reue, Sex differences in obesity, lipid metabolism, and inflammation—A role for the sex chromosomes?, Molecular Metabolism, Volume 15, 2018, Pages 35-44, ISSN 2212-8778, https://doi.org/10.1016/j.molmet.2018.04.003.

Salzano, A., D’Assante, R., Heaney, L.M. et al. Klinefelter syndrome, insulin resistance, metabolic syndrome, and diabetes: review of literature and clinical perspectives. Endocrine 61, 194–203 (2018). https://doi.org/10.1007/s12020-018-1584-6

Vladimir K. Bakalov, Clara Cheng, Jian Zhou, Carolyn A. Bondy, X-Chromosome Gene Dosage and the Risk of Diabetes in Turner Syndrome, The Journal of Clinical Endocrinology & Metabolism, Volume 94, Issue 9, 1 September 2009, Pages 3289–3296, https://doi.org/10.1210/jc.2009-0384

Mao Jiang-Feng, M.D. Xu Hong-Li, M.D. Wu Xue-Yan, M.D. Lu Shuang-Yu, M.D. Xiang Hong-Ding, M.D. Liao Liang-Ming, M.D. et al. Prevalence and risk factors of diabetes in patients with Klinefelter syndrome: a longitudinal observational study Published:August 31, 2012 DOI: https://doi.org/10.1016/j.fertnstert.2012.07.1122

Tao Yuan1, Shixuan Liu2, Shuoning Song3, Shi Chen4, Linjie Wang5, Yong Fu6, Yingyue Dong7, Yan Tang8, Weigang Zhao, et al. Glucose Metabolic Disorder in Klinefelter Syndrome: A Retrospective Analysis in a Single Chinese Hospital and Literature Review.

Butler G. Incidence of gynaecomastia in Klinefelter syndrome adolescents and outcome of testosterone treatment. Eur J Pediatr. 2021 Oct;180(10):3201-3207. doi: 10.1007/s00431-021-04083-2. Epub 2021 May 2. PMID: 33934233.