Minimal anonymized dataset necessary to replicate our study findings.

Legend symbols: GERD = gastroesophageal reflux disease; EBC = Eosinophils blood count; Tot IgE = serum total IgE level; HP = Helicobacter Pylori infection; *URT-DUR = duration of urticaria (weeks); **GERD-DUR = duration of gastroesophageal reflux disease before urticaria onset (months); UAS7 = urticaria activity score according to UAS7; IBS = irritable bowel syndrome; ***Clinical diagnoses: ASU = acute spontaneous urticaria; CSU = chronic spontaneous urticaria; acute/chronic UGOS = acute/chronic Urticaria and GERD Overlap Syndrome; IBD = inflammatory bowel diseases; ****Endoscopic study: endoscopy/bioptic data of GERD according to Los Angeles Classification (L.A.)–grade A, B, C, D (L.A. A/B/C/D); NERD = Non erosive disease; S-BE = Short-Barrett’s esophagus; bioptic data of celiac disease (CD) according to the modified Marsh–Oberhuber classification–type 1–4 (Marsh 1–4). (XLSX)