^aGenetic Medicine, Regional Medical Genetics Centre

^bSchool of Dentistry

^cCentre for Cancer Research and Cell Biology, Queens University Belfast, Belfast Health and Social Care Trust, Belfast, UK

Correspondence to Patrick J. Morrison, MD, DSc, Genetic Medicine, Regional Medical Genetics Centre, Belfast Health and Social Care Trust, Lisburn Road, Belfast BT9 7AB, UK Tel: +44 28 9504 8177; fax: +44 28 9023 6911; e-mail: [email protected]

Received January 13, 2014

Accepted May 7, 2014