Newman, C., Connolly, S., MacEneaney, O., O’Keane, C. and McQuaid, S.E. 2019. Leydig Cell Hyperplasia Mimicking a Testicular Tumour in a Patient with Klinefelter Syndrome. European Journal of Case Reports in Internal Medicine. 6, 6 (Jun. 2019). DOI:https://doi.org/10.12890/2019_001129.