1 Pediatric Hematology, Oncology and Stem Cell Transplant Division, Padua University Hospital, Padua, Italy.
2 Allergy, Immunology and Rheumatology Division, Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore City, Singapore.
3 Rare Diseases Referral Center, Internal Medicine 1, Ca' Foncello Hospital, Treviso, Italy.
4 Department of Medicine - DIMED, University of Padova, Padova, Italy.