The Story of Intellectual Disability: An Evolution of Meaning, Understanding, and Public Perception. Brookes Publishing. Smith, Philip. (2010). Whatever Happened to Inclusion? : The Place of Students with Intellectual Disabilities in Education. New York: Peter Lang Publishing. ISBN 978-1433104343 LCCN 2009-44580 OCLC 460711867. External links

Facts about intellectual disabilities from the US Centers for Disease Controls National Center on Birth Defects and Developmental Disabilities
Diagnosis
In the diagnosis of pulmonary insufficiency both echocardiograms and ECG is used to ascertain if the individual has this condition, as well as, the use of a chest x-ray to expose enlargement of the right atrium or ventricle. Treatment
In treating pulmonary insufficiency, it should be determined if pulmonary hypertension is causing the problem to therefore begin the most appropriate therapy as soon as possible (primary pulmonary hypertension or secondary pulmonary hypertension due to thromboembolism). Furthermore, pulmonary insufficiency is generally treated by addressing the underlying condition, in certain cases, the pulmonary valve may be surgically replaced. See also
Pulmonary valve stenosis

References
Further reading
Lake, Carol L.; Booker, Peter D. (2005-01-01). Pediatric Cardiac Anesthesia. Lippincott Williams & Wilkins. ISBN 9780781751759. Bruce, Charles J.; Connolly, Heidi M. (2009-05-26). "Right-Sided Valve Disease Deserves a Little More Respect". Circulation. 119 (20): 2726–2734. doi:10.1161/CIRCULATIONAHA.108.776021. ISSN 0009-7322. PMID 19470901. M.D, Steven Lehrer (2011-12-27). Understanding Pediatric Heart Sounds. Steven Lehrer. ISBN 9781468138030. External links
"Problem: Pulmonary Valve Regurgitation". www.heart.org. Retrieved 2015-08-29.