[1] CIRO, Dept Res & Educ, Hornerheide 1, NL-6085 NM Horn, Netherlands
[2] MUMC, Ctr Expertise Palliat Care, Maastricht, Netherlands
[3] Zuyderland, Dept Resp Med, Heerlen, Netherlands
[4] Zuyderland, Dept Resp Med, Sittard Geleen, Netherlands
[5] Elkerliek Hosp, Dept Resp Med, Helmond, Netherlands
[6] St Anna Hosp, Dept Resp Med, Geldrop, Netherlands
[7] Maastricht Univ, CAPHRI Sch Publ Hlth & Primary Care, Dept Family Med, Maastricht, Netherlands
[8] Radboud Univ Nijmegen, Med Ctr, Dept Med Psychol, Nijmegen, Netherlands
[9] Radboud Univ Nijmegen, Med Ctr, Dept Pulm Dis, Nijmegen, Netherlands
[10] MUMC, Dept Resp Med, Maastricht, Netherlands