Fig. 1. Sankey diagram that shows the initial symptoms and final diagnosis of patients in the study group.

FPIAP: food protein induced allergic proctocolitis, FTT: failure to thrive, PAD: predominantly antibody deficiency, CID: combined immunodeficiencies, ID: immune dysregulation, CDP: congenital defects of phagocyte, DII: defects in intrinsic and innate immunity, AD: autoinflammatory disorders.