1. American Medical Association. 2009. “Opinion 2.12 – Genetic Counseling.” In Code of Medical Ethics. Chicago, IL: American Medical Association.
2. American Medical Association. 2009. “Opinion 2.215 – Treatment Decisions for Seriously Ill Newborns.” In Code of Medical Ethic 2008–2009 edition. Chicago, IL: American Medical Association.
3. Casale, A. J. 2007. "Posterior Urethral Valves and Other Urethral Anomalies," edited by Meredith F. Campbell, Alan J. Wein, and Louis R. Kavoussi. 9th edition, vol. 4 (xlii, 3945, cxv p.). Philadelphia, PA: Saunders Elsevier.
4. Gatti, J.M. and A.J. Kirsch. 2001. “Posterior urethral valves: pre- and postnatal management.” Current Urology Reports 2, no. 2: 138–145.
5. Grimshaw, J.M. and I. T. Russell. 1993. “Effect of clinical guidelines on medical practice: a systematic review of rigorous evaluations.” Lancet 342, no. 8883:1317–1322.