TY  - RPRT
TI  - Community-based intervention trials.
AU  - B R Kirkwood
AU  - R H Morrow
PY  - 1989
DO  - 10.1017/s0021932000025281
UR  - https://pubmed.ncbi.nlm.nih.gov/2666421/
ID  - 2666421
ER  -