TY  - RPRT
TI  - Training in retrograde intubation.
AU  - H Guggenberger
AU  - G Lenz
PY  - 1988
DO  - 10.1097/00000542-198808000-00040
UR  - https://pubmed.ncbi.nlm.nih.gov/3407991/
ID  - 3407991
ER  -