Evaluation of the Newborn with Single or Multiple Congenital Anomalies A clinical guideline-New York State Department of Health. http://www.health.state.ny.us/nysdoh/dpprd/purpose.htm

The Merck Manual A discussion about congenital anomalies and its causes, diagnosis and its treatment. http://www.merck.com/pubs/mmanual/section19/chapter261/261a.htm

Ocularist Association of California: Congenital Anomalies Explains briefly about the prosthesis procedures of an eye in an infant. http://www.ocularists.org/micro.htm

Australian DeafBlind Council (ADBC) Information on Usher's syndrome. Membership includes people with deafblindness, family, carers, support workers, professionals and service organisations. http://home.connexus.net.au/~dba/