Provide medical research studies on delayed diagnosis of celiac disease

I would like links to all credible research studies conducted on the impact of a delayed diagnosis of celiac disease causing permanent health damage. can include causing other conditions including neuropathy, pernicious anemia, pain, fatigue. Also how a delayed diagnosis of an autoimmune disease (celiac disease) and accompanying ongoing inflammation can cause a progression despite a gluten free diet. Often a gluten free diet contains trace gluten (study done by Fasano) which permits ongoing inflammation. but the main topic is the causal relationship with a delay in diagnosis causing irreversible damage to the system.