1. Department of Biomedical Sciences Humanitas University 20072 Pieve Emanuele Milan Italy
2. IRCCS Humanitas Research Hospital 20089 Rozzano Milan Italy
3. Laboratory of Haematology and Blood Bank Unit, “Attiko” University Hospital, School of Medicine National and Kapodistrian University of Athens 12462 Athens Greece
4. Microbiology Department “Saint Savvas” Oncology Hospital 11522 Athens Greece
5. Michael G DeGroote Cochrane Canada and McMaster GRADE Centres McMaster University HSC‐2C, 1280 Main St West Hamilton Ontario L8N 3Z5 Canada
6. Department of Health Research Methods, Evidence and Impact McMaster University 1280 Main St West Hamilton Ontario L8N 3Z5 Canada