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Fragile XE: an important differential diagnosis.
Krishnan V, Clouston P, Crocker M, Macpherson J, Heydon F, Stewart H. Krishnan V, et al. Among authors: heydon f. BMJ Case Rep. 2010;2010:bcr06.2009.1964. doi: 10.1136/bcr.06.2009.1964. Epub 2010 Mar 23. BMJ Case Rep. 2010. PMID: 22442650 Free PMC article.
Reduced penetrance alleles for Huntington's disease: a multi-centre direct observational study.
Quarrell OW, Rigby AS, Barron L, Crow Y, Dalton A, Dennis N, Fryer AE, Heydon F, Kinning E, Lashwood A, Losekoot M, Margerison L, McDonnell S, Morrison PJ, Norman A, Peterson M, Raymond FL, Simpson S, Thompson E, Warner J. Quarrell OW, et al. Among authors: heydon f. J Med Genet. 2007 Mar;44(3):e68. doi: 10.1136/jmg.2006.045120. J Med Genet. 2007. PMID: 17361007 Free PMC article.