Compensated reduction in Leydig cell function is associated with lower semen quality variables: A study of 8182 European young men

N. Jørgensen, U. N. Joensen, J. Toppari, M. Punab, J. Erenpreiss, B. Zilaitiene, U. Paasch, A. Salzbrunn, M. F. Fernandez, H. E. Virtanen, V. Matulevicius, N. Olea, T. K. Jensen, J. H. Petersen, N. E. Skakkebæk, A. M. Andersson