TY  - RPRT
TI  - A long-discontinued practice.
AU  - S Lennon
AU  - S Davenport
PY  - 1987
DO  - 10.1016/s0140-6736(87)92636-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2892062/
ID  - 2892062
ER  -