TY  - RPRT
TI  - Descending modulation in persistent pain: an update.
AU  - Ke Ren
AU  - Ronald Dubner
PY  - 2002
DO  - 10.1016/s0304-3959(02)00368-8
UR  - https://pubmed.ncbi.nlm.nih.gov/12435453/
ID  - 12435453
ER  -