Santi, D., Ivell, R., Anand‐Ivell, R., De Toni, L., Fanelli, F., Mezzullo, M., …Simoni, M. (2020). Effects of acute hCG stimulation on serum INSL3 and 25‐OH vitamin D in Klinefelter syndrome. Andrology, https://doi.org/10.1111/andr.12851