[1] Harbor UCLA Med Ctr, Dept Med, Div Endocrinol, Torrance, CA 90509 USA
[2] Gen Clin Res Ctr, Los Angeles Biomed Res Inst, Torrance, CA 90509 USA
[3] Univ Munster, Ctr Reprod Med & Androl, Munster, Germany
[4] Univ Halle Wittenberg, Univ Hosp Halle, Ctr Reprod Med & Androl, Halle, Germany
[5] Tulane Univ, Dept Urol, New Orleans, LA 70118 USA
[6] Vrije Univ Amsterdam Med Ctr, Dept Endocrinol, Amsterdam, Netherlands
[7] Acad Ziekenhuis, Dept Endocrinol, Ghent, Belgium
[8] Ctr Hosp Univ, Liege, Belgium
[9] Bar Ilan Univ, Fac Life Sci, Ramat Gan, Israel
[10] Queens Univ, Ctr Appl Urol Res, Kingston, ON, Canada
[11] St Louis Univ, St Louis VA Med Ctr, Div Geriatr Med, St Louis, MO 63103 USA
[12] GREEC, St Louis, MO 63103 USA
[13] Univ Clin Brussels, Erasme Hosp, Dept Urol, Brussels, Belgium
[14] Univ Texas Hlth Sci Ctr San Antonio, Dept Urol, San Antonio, TX USA
[15] Univ Giessen, Univ Hosp, Dept Urol & Pediat Urol, Giessen, Germany
[16] Univ Manchester, Manchester Royal Infirm, Dept Endocrinol, Manchester M13 9WL, Lancs, England