| Timothy W. Hefferon - National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland,USA                                                Ferec C., Audrezet MP, Chen JM - INSERM, U613 (Génétique Moléculaire et Génétique Epidémiologique), Brest, France |  -  | Krenkova P., Piskáčková T.,  Macek Jr. M - Department of Biology and Medical Genetics, 2nd Faculty of Medicine and Faculty Hospital Motol, Prague, Czech  Republic |