1. Doyle, A. C. The Complete Sherlock Holmes; Doubleday: Garden City, NY; pp 23.
2. Gorlin’s Syndromes of the Head and Neck;Hennekam,2010
3. Smith’s Recognizable Patterns of Human Malformation;Jones,2006
4. Winter, R. M.; Baraister, M. London Dysmorphology Database, http://lmdatabases.com/(requires subscription) 2011
5. POSSUM Web http://www.possum.net.au/ (requires subscription).