1. Biology of Reproduction and Stem Cells Group, CNC- Center for Neuroscience and Cell Biology, CIBB, Polo III, Azinhaga Santa Comba, University of Coimbra, Coimbra, Portugal
2. University of Coimbra, IIIUC, Casa Costa Alemão, Coimbra, Portugal
3. Reproductive Medicine Unit, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
4. Faculty of Medicine, University of Coimbra, Coimbra, Portugal
5. Laboratoire Innotech International, Arcueil, France
6. Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal