TY  - RPRT
TI  - Using Internet services to generate a research sampling frame.
AU  - S L Chen
AU  - J R Effler
AU  - A L Roche
PY  - 2001
DO  - 10.1046/j.1442-2018.2001.00066.x
UR  - https://pubmed.ncbi.nlm.nih.gov/11882173/
ID  - 11882173
ER  -