TY  - RPRT
TI  - On clinical efficacy: why biofeedback does--and does not--work.
AU  - S J Middaugh
PY  - 1990
DO  - 10.1007/bf01011105
UR  - https://pubmed.ncbi.nlm.nih.gov/2223889/
ID  - 2223889
ER  -