TY  - RPRT
TI  - Cricoid pressure: a simple, yet effective biofeedback trainer.
AU  - A Kopka
AU  - J Crawford
PY  - 2004
DO  - 10.1017/s0265021504006052
UR  - https://pubmed.ncbi.nlm.nih.gov/15248623/
ID  - 15248623
ER  -