Affiliation: | 1 Section of Molecular Genetics &; Infertility, Department of Gynecological Endocrinology &; Reproductive Medicine, University of Heidelberg, Heidelberg, Germany 2 Department of Human Genetics, Faculty of Medicine, University of Porto, Porto, Portugal 3 The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford 4 Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome; and 5 The Wellcome Trust Sanger Institute, Hinxton, United Kingdom |