TY  - RPRT
TI  - Aids to easy breathing.
AU  - D G RENTON
PY  - 1951
DO  - 10.5694/j.1326-5377.1951.tb74559.x
UR  - https://pubmed.ncbi.nlm.nih.gov/14890194/
ID  - 14890194
ER  -