Ekerhovd , Erling, Anders Faurskov, and Charlotte Werner. “Swedish Sperm Donors Are Driven by Altruism, But Shortage of Sperm Donors Leads to Reproductive Travelling”. Upsala Journal of Medical Sciences 113, no. 3 (July 12, 2009). Accessed March 27, 2026. https://ujms.net/index.php/ujms/article/view/6588.