Diagnostic genetic testing for Huntington's disease. Issue 1 (28th August 2014) - Craufurd, David; MacLeod, Rhona; Frontali, Marina; Quarrell, Oliver; Bijlsma, Emilia K; Davis, Mary; Hjermind, Lena Elisabeth; Lahiri, Nayana; Mandich, Paola; Martinez, Asunción; Tibben, Aad; Roos, Raymund A