Etiology
autoimmune polyglandular syndrome type I (16684833)
References
Oliva-Hemker M, Berkenblit GV, Anhalt GJ, Yardley JH.Pernicious anemia and widespread absence of gastrointestinal endocrine cells in a patient with autoimmune polyglandular syndrome type I and malabsorption.J Clin Endocrinol Metab. 2006 Aug;91(8):2833-8. PMID: 16684833