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Congenital lactase deficiency
- Anatomic Problems of the Lower GI Tract
(National Institute of Diabetes and Digestive and Kidney Diseases) ... tract, large intestine, colon, rectum, anus, structural defects, congenital defects, birth defects, anorectal malformations, imperforate anus, colonic ...
(National Institute of Diabetes and Digestive and Kidney Diseases) 