TY  - RPRT
TI  - Vertical or horizontal visual analogue scales.
AU  - J Scott
AU  - E C Huskisson
PY  - 1979
DO  - 10.1136/ard.38.6.560
UR  - https://pubmed.ncbi.nlm.nih.gov/317239/
ID  - 317239
ER  -