Leydig cell hypoplasia:: cases with new mutations, new polymorphisms and cases without mutations in the luteinizing hormone receptor gene - Richter-Unruh, A.; Martens, J. W. M; Verhoef-Post, M.; Wessels, H. T.; Kors, W. A.; Sinnecker, G. H. G.; Boehmer, A.; Drop, S. L. S.; Toledo, S. P. A.; Brunner, H. G.; Themmen, A. P. N. (Clinical Endocrinology, 2002)