A Sitz marker study is a test for chronic constipation in adults and children at least two years of age. Learn why this study might be indicated and the steps for the procedure here.
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North American Society for Pediatric Gastroenterology, Hepatology and Nutrition
The Association of Pediatric Gastroenterology and Nutrition Nurses
North American Society for Pediatric Gastroenterology, Hepatology and Nutrition Foundation
The NASPGHAN Council For Pediatric Nutrition Professionals