1. Department of Biology; Biotechnology of Animal and Human Reproduction (TechnoSperm); Institute of Food and Agricultural Technology; University of Girona; Girona Spain
2. Nuffield Department of Obstetrics & Gynaecology; University of Oxford, Level 3; Women's Centre; John Radcliffe Hospital; Oxford Headington UK
3. Faculty of Medicine; Human Genetics Research Group; IDIBAPS; University of Barcelona; Barcelona, and Biochemistry and Molecular Genetics Service; Clinic Hospital; Barcelona Spain