TY  - RPRT
TI  - Studying symptoms: sampling and measurement issues.
AU  - K Kroenke
PY  - 2001
DO  - 10.7326/0003-4819-134-9_part_2-200105011-00008
UR  - https://pubmed.ncbi.nlm.nih.gov/11346320/
ID  - 11346320
ER  -