1. University "G. D'Annunzio" of Chieti-Pescara; Department of Medical, Oral and Biotechnological Sciences; via dei Vestini 31 Chieti Italy 66013
2. Academic Medical Center; Department of Vascular Medicine; Amsterdam Netherlands
3. Children's Hospital, University of Cologne; Pediatric Oncology and Hematology; Kerpener Str. 62 Cologne NW Germany 50937
4. "University G. D'Annunzio" Foundation; Department of Medicine and Aging; Centre for Aging Sciences (Ce.S.I.), Internal Medicine Unit; 31 Via dei Vestini Chieti Chieti Italy 66100
5. Fondazione "Università G. D'Annunzio"; Centre for Systematic Reviews; via dei Vestini 31 Chieti Chieti Italy 66100
6. University of Bern; Institute of Social and Preventive Medicine (ISPM); Finkenhubelweg 11 Bern Bern Switzerland 3012