TY  - RPRT
TI  - A modified Ayres T--piece.
AU  - D W Bethune
AU  - T C Crichton
PY  - 1967
DO  - 10.1111/j.1365-2044.1967.tb02707.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6016180/
ID  - 6016180
ER  -