title: Clinics are importing more foreign sperm to meet UK demand for IVF.
authors.affiliation: London.
authors.forename: Ingrid
authors.initials: I
authors.lastname: Torjesen
mesh_terms: D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D008297:Male; D018587:Oocyte Donation / Q000706:statistics & numerical data; D013074:Sperm Banks / Q000706:statistics & numerical data; D053625:Sperm Retrieval; D014019:Tissue Donors / Q000706:statistics & numerical data / Q000600:supply & distribution*; D006113:United Kingdom