Huma Arshad Cheema; Nadia Waheed; Anjum Saeed; Zafar Fayyaz; Muhammad Nadeem Anjum; Muhammad Arshad Alvi; Syeda Sara Batool. Very Early Onset Inflammatory Bowel Disease (VEO-IBD); Spectrum of Clinical Presentation, Diagnostic Tools and Outcome in Children. J Pak Med Assoc 2021, 71, 2350-2354.