[1] West Virginia Univ, Dept Commun Sci & Disorders, 805 Allen Hall,POB 6122, Morgantown, WV 26506 USA
[2] Statped, Dept Speech & Language Disorders, Oslo, Norway
[3] Univ Tuzla, Tuzla, Bosnia & Herceg
[4] CRC Balbuzie, Rome, Italy
[5] Univ Rome, Rome, Italy
[6] Rheinisch Westfal Tech Hsch Aachen RWTH Aachen Un, Aachen, Germany
[7] Aakershagan Training & Act Ctr, Stange, Hedmark, Norway
[8] Special Pedag Team, Gran, Oppland, Norway
[9] Statped, Dept Speech & Language Disorders, Bergen, Norway
[10] Lund Univ, Lund, Sweden
[11] Helsingborg Hosp, Speech Language Pathol, Helsingborg, Sweden
[12] Wicklow Primary Healthcare Ctr, Knockrobin, Wicklow Town, Ireland
[13] Trinity Coll Dublin, Dublin, Ireland
[14] Berkshire Healthcare NHS Fdn Trust, Thatcham, England
[15] Univ Reading, Reading, Berks, England
[16] Univ York, York, N Yorkshire, England