TY  - RPRT
TI  - Basic science; some observations in the United States.
AU  - D C SINCLAIR
PY  - 1953
DO  - 10.1016/s0140-6736(53)90245-1
UR  - https://pubmed.ncbi.nlm.nih.gov/13137542/
ID  - 13137542
ER  -