Infertility, Male

• Zentrums für Reproduktions-medizin und Andrologie Universitätsklinikum Halle (Saale), Martin-Luther-Universität Halle-Wittenberg — Halle, Germany
• Dipartimento di Ginecologia e Medicina della Riproduzione IRCCS Istituto Clinico Humanitas, — Rozzano, Milan, Italy
• Andrology Unit Department of Clinical Physiopathology — Florence, Italy
• AziendaUSLModena — Modena, Italy

• University of Washington — Seattle, Washington, United States

• Service of gynaecology-obstetrics and medicine of the reproduction, Tenon Hospital - APHP — Paris, France

• Rigshospitalet — Copenhagen, Denmark

• Obstretrics, Gynecology and Reproductive Science, RUH — Saskatoon, Saskatchewan, Canada

• University of Southern California Women's and Children's Hospital — Los Angeles, California, United States
• North Shore University Hospital — Manhasset, New York, United States
• Copper Hospital and Fertility Testing Laboratory and Sperm Bank — Philadelphia, Pennsylvania, United States

• Department of Urology, Pusan National University Hospital — Busan, South Korea

• Center for Human Reproduction — Manhasset, New York, United States

Not specified

• University of Nigeria Teaching Hospital, Ituku-Ozalla, — Enugu, Enugu State, Nigeria