Serum inhibin-b in fertile men is strongly correlated with low but not high sperm counts: a coordinated study of 1,797 European and US men

Niels Jørgensen, Fan Liu, Anna-Maria Andersson, Matti Vierula, D Stewart Irvine, Jacques Auger, Charlene K Brazil, Erma Z Drobnis, Tina K Jensen, Pierre Jouannet, James W Overstreet, J Bruce Redmon, Amy Sparks, Jorma Toppari, Christina Wang, Niels E Skakkebæk, Shanna H Swan