Comment on

• Influence of heterozygosity for parkin mutation on onset age in familial Parkinson disease: the GenePD study.

  Sun M, Latourelle JC, Wooten GF, Lew MF, Klein C, Shill HA, Golbe LI, Mark MH, Racette BA, Perlmutter JS, Parsian A, Guttman M, Nicholson G, Xu G, Wilk JB, Saint-Hilaire MH, DeStefano AL, Prakash R, Williamson S, Suchowersky O, Labelle N, Growdon JH, Singer C, Watts RL, Goldwurm S, Pezzoli G, Baker KB, Pramstaller PP, Burn DJ, Chinnery PF, Sherman S, Vieregge P, Litvan I, Gillis T, MacDonald ME, Myers RH, Gusella JF. Sun M, et al. Arch Neurol. 2006 Jun;63(6):826-32. doi: 10.1001/archneur.63.6.826. Arch Neurol. 2006. PMID: 16769863
• Clinical spectrum of homozygous and heterozygous PINK1 mutations in a large German family with Parkinson disease: role of a single hit?

  Hedrich K, Hagenah J, Djarmati A, Hiller A, Lohnau T, Lasek K, Grünewald A, Hilker R, Steinlechner S, Boston H, Kock N, Schneider-Gold C, Kress W, Siebner H, Binkofski F, Lencer R, Münchau A, Klein C. Hedrich K, et al. Arch Neurol. 2006 Jun;63(6):833-8. doi: 10.1001/archneur.63.6.833. Arch Neurol. 2006. PMID: 16769864