1. Institut de Biologia Molecular de Barcelona (CSIC) Barcelona Spain
2. Institut de Recerca de Biomèdica Barcelona Spain
3. Howard Hughes Medical Institute, Department of Cell Biology, New York University School of Medicine New York USA
4. Kimmel Center for Biology and Medicine of the Skirball Institute, Department of Cell Biology, New York University School of Medicine New York USA
5. Instituto Gulbenkian de Ciência Oeiras Portugal