by Meulenbroek, Leo F.P, Thomas, George, Kooijman, Piet G.C, de Jong, Felix I.C.R.S
Published in Journal of psychosomatic research (01.04.2010)

by Meulenbroek, Leo F.P, de Jong, Felix I.C.R.S
Published in Journal of voice (01.07.2011)

by Thomas, George, Kooijman, Piet G.C, Donders, A. Rogier T, Cremers, Cor W.R.J, de Jong, Felix I.C.R.S
Published in Journal of voice (01.05.2007)

by Vanhoudt, Isabelle, Thomas, George, Wellens, Willy A.R, Vertommen, Hans, de Jong, Felix I.C.R.S
Published in Journal of psychosomatic research (01.10.2008)

by Poels, Patrick J.P, de Jong, Felix I.C.R.S, Schutte, Harm K
Published in Journal of voice (01.09.2003)

by Thomas, George, de Jong, Felix I.C.R.S., Cremers, Cor W.R.J., Kooijman, Piet G.C.
Published in Folia phoniatrica et logopaedica (01.01.2006)

by Verguts, Monique M. L., Eggermont, Anita, Decoster, Wivine, de Jong, Felix I. C. R. S., Hellings, Peter W.
Published in European archives of oto-rhino-laryngology (01.03.2011)