1. Department of Vascular Biology, Integrin Signaling Laboratory, Centro Nacional de Investigaciones Cardiovasculares; Madrid Spain
2. Unitat de Microscopia Confocal, Centres Científics i Tecnològics, Universitat de Barcelona; Barcelona Spain
3. Departament de Biologia Cellular, Immunologia i Neurociències, Institut d‧Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Facultat de Medicina, Universitat de Barcelona; Barcelona Spain
4. Division of Experimental Hematology and Cancer Biology, Children's Hospital Medical Center, University of Cincinnati; Cincinnati OH USA