bibliographic entry 11623218 [be/11623218]
https://w3id.org/oc/corpus/be/11623218

is a

• bibliographic reference

content

• Rubin D. Using propensity scores to help design observational studies: application to the tobacco litigation. Health Serv Outcomes Res Method 2001; 2: 169-88.

references

• https://w3id.org/oc/corpus/br/5400935