TY  - RPRT
TI  - Understanding VAS valuations: qualitative data on the cognitive process.
AU  - Sylvie M C van Osch
AU  - Anne M Stiggelbout
PY  - 2005
DO  - 10.1007/s11136-005-6808-6
UR  - https://pubmed.ncbi.nlm.nih.gov/16328897/
ID  - 16328897
ER  -