@misc{indiciae987e244b2986, title = {Screening for stratification in two-phase ('two-stage') epidemiological surveys.}, author = {A Pickles and G Dunn and J L Vázquez-Barquero}, year = {1995}, doi = {10.1177/096228029500400106}, url = {https://pubmed.ncbi.nlm.nih.gov/7613639/}, note = {Source identifier: 7613639} }