@misc{indiciae674768e9d6a2, title = {Understanding sampling: representativeness matters.}, author = {J P Davis and I K Crombie and H T Davies}, year = {2001}, doi = {10.12968/hosp.2001.62.4.2052}, url = {https://pubmed.ncbi.nlm.nih.gov/11338957/}, note = {Source identifier: 11338957} }