TY  - RPRT
TI  - Preventive medicine.
AU  - A Smith
AU  - B Jacobson
PY  - 1988
DO  - 10.1016/s0140-6736(88)92811-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2902290/
ID  - 2902290
ER  -