[1] Univ Ghent, Dept Experimental Clin & Hlth Psychol, B-9000 Ghent, Belgium
[2] Res Inst Psychol & Hlth, Utrecht, Netherlands
[3] Ghent Univ Hosp, Cyst Fibrosis Ctr, Ghent, Belgium
[4] Ghent Univ Hosp, Dept Pediat, Ghent, Belgium
[5] Belgian Cyst Fibrosis Assoc, Brussels, Belgium