1 Retrovirus Centre, Department of Translational Medicine and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy. michele.lai@unipi.it.
2 Institute of Life Science, Scuola Sant'Anna Pisa, Pisa, Italy.
3 Cell Death and Metabolism Unit, Center for Autophagy, Recycling and Disease, Danish Cancer Society Research Center, Copenhagen, Denmark.
4 Retrovirus Centre, Department of Translational Medicine and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.
5 Anatomy and Neurobiology, University of California, Irvine, CA, USA.
6 Virology Unit, Pisa University Hospital, Pisa, Italy.