[1] Karolinska Inst, Dept Med Epidemiol & Biostat, Nobels Vag 12 A, SE-17177 Stockholm, Sweden
[2] Karolinska Inst, Dept Clin Sci Intervent & Technol CLINTEC, Div Speech & Language Pathol, Stockholm, Sweden
[3] Karolinska Univ Hosp, Med Unit Speech & Language Pathol, Stockholm, Sweden