Birute Tumiene1,2, Ulf Kristoffersson3, Victoria Hedley4, Helena Kääriäinen5. 1. Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Vilnius, Lithuania. tumbir@gmail.com. 2. Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania. tumbir@gmail.com. 3. Division of Clinical Genetics, Laboratory Medicine (U.K.), Lund University, Lund, Sweden. 4. John Walton Muscular Dystrophy Research Centre, Newcastle University, Institute of Genetic Medicine, Newcastle upon Tyne, UK. 5. Genomics and Biomarkers Unit, National Institute for Health and Welfare, Helsinki, Finland.