Kleijn WPE, De Vries J,
Wijnen PAHM, Drent M. Minimal (clinically) important differences for the
Fatigue Assessment Scale in sarcoidosis. Respir Med 2011; 105: 1388-95.
http://www.ncbi.nlm.nih.gov/pubmed/21700440
De Vries, Michielsen H, Van
Heck GL, Drent M. Measuring fatigue in sarcoidosis: the Fatigue Assessment
Scale (FAS). Br J Health Psychol 2004; 9: 279-91.
http://www.ncbi.nlm.nih.gov/pubmed/15296678