1. Diagnostic and Statistical Manual of Mental Disorders,2013
2. Constipation in infants and children: evaluation and treatment. A medical position statement of the North American Society for pediatric gastroenterology and nutrition;Baker;J. Pediatr. Gastroenterol. Nutr.,1999
3. Studies on encopresis;Bellman;Acta Paediatr. Scand.,1966
4. Elimination Disorders in Children and Adolescents;Christophersen,2009
5. Prevalence and risk factors for childhood nocturnal enuresis;Devlin;Ir. Med. J.,1991